i hope not

yes with nintendo and sony finally partnering like they weresuppose to many years to create the ultimate console

I miss the fifth generation, when you had way more than 3:
Playstation
Sega Saturn
Nintendo 64
3DO Interactive Multiplayer
Atari Jaguar
FM Towns Marty
Pioneer LaserActive
Amiga CD32
PC-FX
Apple Bandai Pippin
Playdia
Casio Loopy

That's a total of 12 consoles!

*Register this*
So long as Nintendo is in the market, it will never happen.

The console should be irrelevant. It's not like the current makers are making trillions off the hardware by the time development and promotion are done. The money is, was and will continue to always be in the software.

Getting the makers to give up their shot at that software money is what is going to be the problem.

Open source console from google? Just a suggestion or something?

The only company being watched over for anti-trust is Microsoft. If it was to be anyone who was to try to dominate to the point where a monopoly would occur it would be them. 

OP: No, i don't think there will be any universal console, because it will not promote exclusive development and competition.

I hope it will never happen. As a consumer, I regret that I can't buy only one console and not have to worry about anything else.

Then I remember that the alternative to consoles is PC's. Because a rig costing  twice as much, getting outdated in half the time, and coming with a lot of glitches because software isn't optimized for hardware is totally consumer friendly. A one console market will be price and quality gouged, perhaps not to that extent, but a good deal. There is no free lunch.

I think that three or four manufacturers is about right. Some gamers will want to buy multiple consoles, so manufactuerers will have to keep their pices down to continue to attract buyers on the fence. There's also room for multiple high and low power console philosophies without too much overlap.

If Microsoft buys Sony, then yes. Otherwise no.

But I think the "big console box under your TV" is a concept that may be nearing its end anyway.

I think there will be consoles in 10 years, but it will be like Blu-Ray/DVD players today ... they're still around, but you can see the beginning of the end of it.

You will probably have cell phones in 10 years capable of creating PS4 level visuals and beaming that video signal wirelessly to the television in any room of a house. All you'll need is a wireless game control, no console needed to play games and more and more gaming will be available ala carte through Cloud services -- get your movies, music, gaming, etc. through one cable/service subscription provider (ie: Apple).

Hum, when home consoles will be replaced by VR headset, there will probably be some death among the big three (whom might not be the same as now).

But mobile will stay, or be replaced by AR portable devices (google glass sucks, BTW), and there will probably be even more way to play.

So no.

I don't think we will however I do like the idea of a more 'mobile phone like' business model. This being that a hardware manufacturers will make the consoles based on similar designs, software companies will make an OS each with their own special features but primarily the same so they can play all games that are made by developers.

But I'm thinking this business model would only work when the industry is digital only so along way off.