Stop projecting what you feel about Sony's ability as to Microsofts judgement. The statements are there as I have shown them numerous times and you've ignored them to rationalize your own image of whats really going on.

All of what you're saying is assumption (outside of the percentage of of Microsofts business part), but I'll take Joachim Kempins words over yours. He was the head of the division and actually worked for them. He already admitted by the Xbox was created and why they eventually took issue with Sony. Thankfully for the People (US) Vs Microsoft, upholding the Sherman Anti-trust act, companies like Mozilla Firefox and Google Chrome have a shot. Telling me that 33% of their business is based on the OS is obvious, but their programs are still put on that OS stock when you buy a MS product and there are also other variations of attaining said product. All of those split operations of which Microsoft reported its profits are based on the fact that Microsoft was forced to split its company apart because it was hindering competition.

Microsoft "broke the law"
As part of a strongly worded decision, Jackson said the court "has reluctantly come to the conclusion...that a structural remedy has become imperative: Microsoft as it is presently organized and led is unwilling to accept the notion that it broke the law or accede to an order amending its conduct."

He added that Microsoft "continues to do business as it has in the past and may yet do to other markets what it has already done to the PC operating system and browser markets."

"Has anybody considered what this means for Microsoft's partners and the future of technology?" said Keith Teare, founder and CEO of RealNames.

On the other hand, Carl Yankowski, CEO of Palm, supported a split. "It seems to us that the separation of the OS business from the applications business would create the incentive for each independent business to compete fiercely and fairly on a level playing field."

http://news.cnet.com/Judge-Microsoft-must-be-broken-in-two/2100-1001_3-241578.html

P.S.

One of the reasons why I am so persistent about this is because actually had to focus on this trial while studying monopolies when I was a marketing major. My class had to do reports on companies involved in monopoly suits and assess how its effects unchecked would help or hurt the economy. I just happened to have to be given the assignment of researching the people vs Microsoft. 

If Sony were to do this, I'd throw my PS4 and Vita and never buy a Sony product again. Outrageously immoral behaviour.

The EU commission could force Microsoft to remove the app but that is not done overnight.

The activity mentioned in the OP

"I think in this mood in the EU it would be very smart by sony or valve or both to sue Microsoft in europe over their xbox app, it could dissapear and be an optional app for european users. Whats your opinion? I think they could have success."

I know that.

What upsets me actually is that there are people out there that would actually support a company using courts to deprive consumers of services or run up artificial tabs at competing firms, with absolutely zero benefit to themselves (ie, the OP).

Whether or not it's technically possible aside, it's a sad fact that people want them to be able to do it.

Some venomous people out there.

thats right now but if you look a whole decade you got surpassed by france and germany grew bigger. Our economy increased to 35% while yours onky 18%

I am not going by belief, I am going by what has been reported and documented. Joachim Kempin worked for Microsoft from the 1980's to 2002. 

Its not ancient history. 

If you don't have mission statement or reason for being...there is no goal to obtain. Think about it if you've ever been involved with anyone who has a business.

Anyone who has an OS with a multimedia device that sells very well it is a threat to Microsoft. Kempin said Microsoft was always kept at an arms length with Sony but always wanted to have a closer relationship. Obviously this has to do with them dominating the console industry which expanded the sales of formats and created the OS based console competition for the livingroom. 

Essentially...if Microsoft couldn't partner with Sony on the Playstation, the Playstation is a threat.

Enter Xbox. As soon as the Xbox had launched a year later, Kempin left Microsoft.

Sony might not be doing as well as it did in the past (and thats fine), but to ignore the growth the console industry has gone through because of Sony's entrance into it is insane. Look at the marketshare of the industry before Sony entered it. Look at the size of it after Sony dominated it. 

Microsoft caused the red ring of death by rushing the 360 to market because they had to beat Sony's development cycle. If that doesn't seem like the movements of a company that is visibly threatened, you really just dont want to see it. 

"Second, MS was so focused on beating Sony this cycle that the 360 was rushed to market when all indications were that it had serious flaws. The design qual testing was insufficient and incomplete when the product was released to production. The manufacturing test equipment had major gaps in test coverage and wasn't reliable or repeatable. Manufacturing processes at eall levels of suppliers were immature and not in control. Initial end to end yields were in the mid 30%. Low yields always indicate serious design and manufacturing defects. Management chose to continue to ship anyways, and keep the lines running while trying to solve problems and bring the yields up."

http://techreport.com/news/13974/microsoft-insider-xbox-360-was-rushed-to-market

I could see that happening in EU but I don't know if Nintendo or Sony would bother with it though. I don't think that many people would use the xbox app just because it's in windows 10 and Sony is the market leader.

I don't think they have any grounds to sue. If they did it would be ridiculous at best.

This. People who use the Xbox app are going to do so in association with the Xbox. What MS is doing with it is not a threat to Sony or Nintendo.