It seems to me like high end gaming consoles are unsustainable anyway. Sony could barely keep Playstation alive if it wasn't sinking money into the product that it had gained from other sales. Microsoft is in the same boat.

Apple and Google's "gaming" division is just co-opted from their existing hardware and don't take significant resources to run. Nintendo is the only company able to keep itself afloat just from console hardware and software, and we see the market it competes in. It seems no one is willing to go toe-to-toe with Nintendo on their home turf.