Gitlab has introduced a five-user limit for free groups

This applies to the SaaS Gitlab ONLINE. This doesn't apply to Gitlab you install on your hardware.

I mean, online resources on other peoples' servers cost money.

A better law would be to forbid "free" offerings by companies. They all are fraudulent "free", since you pay a commercial entity with either money or data. And, corporate "free" rarely stays free.

(This also doesn't have to be a new law, but application of false and deceptive advertising relating to the FTC, around the term of "free".)

Edit: Found the rule, already in FTC's federal regs: https://www.ecfr.gov/current/title-16/chapter-I/subchapter-B...