The reason you don't see more of this is because everyone does the math, realizes it's not a good deal, and then gives up on the idea.

There's a post at the top of /r/localllama about this exact math right now: https://www.reddit.com/r/LocalLLaMA/comments/1ubrcwj/tokenom...

TL;DR: Running GLM 5.2 is going to cost about $20K minimum, and that's going to be painfully slow compared to the cloud hosted versions. Even the estimates where the server is computing tokens 24/7 you can't break even for several years.

The only reason to run locally is if complete data privacy is your top concern. You pay a high premium for that.