Platforms are an obstacle to customers, from the developer's point of view. This has been obvious since the PS2-PS3 transition - and it's why Sony is freaking out about PSN accounts. They don't give a shit about your data. They desperately want to go back to when every game was made for one system and maybe got a conversion or two. The closest they can get is roping people into their ecosystem to justify the continued existence of their deliberately0incompatible AMD laptop opposite Microsoft's deliberately-incompatible AMD laptop.

Same deal with Epic refusing to make Fortnite work on Steam Deck. It's not a technical issue. They're just having a slapfight with Valve. They want their store to stand up against (let's face it) the de-facto monopoly source for major PC games, and the market says no.

Where this ends is the death of consoles.

There is no reason to release a game three or four separate times, with a private screening process for two or three of them, even if each release is goddamn near identical. All that's really different is which middleman slices off an entire third of the publisher's revenue. There are no technical reasons three of these platforms couldn't just run the same executable with the same data. There's differences - but not important differences. And even the ARM version could be served if games were published in .NET or SPIR-V or whatever. Slow startup time? Yeah, once, but games already take their sweet time installing. Even shaders need to compile and cache. That nonsense would be a lot more sensible if it let you buy whichever hardware was best from whoever the hell was selling it.

So really, where this ends is the death of platforms.