Nobody wants to run browsers in the cloud. Too expensive. We really are getting the worst of all worlds with this, where we have to do all the expensive computations and all our subscriptions do is flip a flag in some database somewhere so that we're allowed to run a few milliseconds/month of computation on their servers while we're providing vast CPU resources to the rendering, and if the company is even half clever, WASM execution that actually costs money.

Exceptions for services that actually cost some non-trivial money per consumer, but there's a lot of crap like an alarm clock or your smart watch's subscription for fitness tracking or other completely trivial bullshit charging $10/month out there.