"secret" deals, sure. They have well known, lesser know, and not known at all to the public practives. The main caveat is that none of them are dominating the console industry, nor necessarily preventing others from competing in the console market. It's just that no one wants to try and compete because it's a vicious market.

We're seeing more handheld PC's, but the days of the Vita or 3DS as dedicated handheld consoles seem to be past us. There's a non-zero chance PC far in the future does the same to regular consoles too.