how can you possibly know so much abiut everything and so little about them at the same time? 

Motion gaming was on the PS2 with the first PlayStation eye cam.

The PSP also had remote play support with the PS3. Both of which came years before the wiiU. 

But yeah, keeping think Nintendo is at the centre of everything lol. 

You may be right. However, that would be unprecedented. This would be essentially the first generation in a loooong time, where the Big 3 are not all releasing "new" consoles together in-sync for a holiday season. Historically, both artistically and economically, it's always been a big trio of an event with a ton of mutual and recipricol sales that end up benefiting the entire industry as a whole.

If Nintendo essentially goes it alone, for the first time in a long time(NES?), then in many ways you could argue that Sony and Microsoft are taking a big risk by letting potential customers all be monopolized by one company. For that reason alone I feel like the the other two companies are already planning "replicas" for April-2017 in case things go really well for Nintendo. Otherwise they'll be rushing like mad to play catch-up. You see where I'm coming from?

Kinect was 20M+ units successful. That's why MS went with it the following gen. I agree Kinect 2 hurt XB but it wasn't stupid of them to go in that direction. They couldn't have known in advance that it would hurt them like it did. They believed the opposite and had evidence to prove it.

Why would they make the same mistake? Well what if VR sells 30M on PS4? Does Sony make VR 2.0 for PS5? Do they redirect development from 4K AAA to smaller, more casual VR games? If they go for the casual crowd, won't they be making the same mistake MS did? Is this why MS isn't making it's own VR and is supporting 3rd party devices instead?

You think the two companies who have put out new consoles in the last 3 years, and have/are putting out iterations of those consoles in this next year, are suddenly going to R&D and push out a hybrid system to match an UNPROVEN Nintendo concept within a month of its release?

With your OP I thought you were a little off base.  Now you are pushing the needle towards remarkably delusional.

Sony had remote play with PS3/PSP, way before WiiU... Hell I even have  a Vaio Laptop back when Sony owned Vaio and it has PS3 remote play, so, your argument is kind of invalid at least on that point...

Switch won't create a new market the way Wii did, as it does not tap into a previously unreached demographic in the same way. 

I hope Sony doesn´t. I´m kinda glad handhelds died as I don´t like them.
Don´t care about microsoft.

I think the point that we're trying to make for Nintendo is the same point that is generally made with Apple. It may very well be that they weren't "the first" in literal terms. It's about being the first to make is revolutionary for the mainstream so that the entire industry as a whole is catapulted.

Which goes back to the main question. If Sony and Microsoft sense that another mass market/blue ocean strategy is underway then they may plan very well in advance rather than play catch-up only as soon as the Switch is successful - they would lose too many customers between the Switch's launch and their launch (if it was a success.)

What I'm getting at is that from a business stand-point it may make sense to follow suit before tha launch purely as a fail-safe.

I'll be honest, right now I don't see paralells as astronomical as the Wii era. Which leads me to believe, either you are right, or there is something on the software side of Nintendo's equation that paint's the full picture of Switch's appeal.

I mean, unless there will be more surprises on the hardware side...?

Because you can do both doesnt make it both. If you look at any hardwsre sincerely, you will see exactly what it is.

So is the PS4 also a mobile console bavuse it has apps like remote play? 

The switch can exist entirely without a TV. and all its hardware is in the tablet or handheld device. That it comes with a dovk allowing you connect it to a TV doesn't make it a home console. Especially when you co sider that the "home console" controller is something you actually buy seperately. 

And let's look at the hardware. It uses carts (and that top out at 15GB), using an arm processor that about half as powerful as the XB1. Does any of that sound like a "home console" to you?

I'm not saying you can't use it as one and that it won't serve as one to most people. I'm just saying that it's obvious that the design direction for it was for it to be a handheld. eveything about it says that's what they were trying to do. they didn't make a home console portable. they made a handheld console dockable. The console has a battery in it for crying out loud.