You can use Open Source Sunshine and Moonlight for inhome broadcasting. You install sunshine on the source PC and use the moonlight app on the phones.
https://github.com/LizardByte/Sunshine/releases https://moonlight-stream.org/
It's meant for game streaming, so it supports controller pass through and what not, but you can also use it to just stream the desktop. It also supports multiple clients, although I have never tried that personally.
Maybe they're just buying these studios to acquire their IPs, code and artwork to train new AI's on. Then close the studio, as you've acquired all its data and it serves no further purpose to them. Probably hoping to release full AAA-AI slop in the future. Don't think it'll work and they'll waste enormous amounts of energy and resources before the AI bubble bursts and everyone realizes that current 'AI' (LLMs) will never become AGI.