Because some things are common sense. Instead of wasting time and money chasing windmills and hoping your family lawyer can beat a multi trillion dollar company, you are much better off spending your time and energy looking for another job if you want to work remotely. When I go into “job search” mode which I have done 10 times in 30 years. My focus isn’t on my current or former employee.

Do you think a lawyer would be necessary if your contract outright stated that you never had to go into an office?

Besides that, every single contract I’ve signed said that nothing said outside of the contract is legally binding.

And legal is very (small c) conservative, they aren’t going to go through the trouble of making a special contract for random employee #1256374 everything is very standardized at these companies except for very high level executives. They are “common talent”. You really have a high opinion of BigTech employees if you think they are “special talent”.