[sangnoir]

> It can't be that hard to follow this law in specific places

The problem is that 'specific places' very dynamic, and is hard to pin down when it comes to employment. A candidate/employee may move to/from jurisdictions where this is a requirement, and job postings may or may not be shown across different jurisdictions.

Does Microsoft want to invest time wrangling in court concerning a Colorado resident not seeing the pay range when they are using a VPN? Or when a candidate becomes a Colorado resident some time between the phone-screen and the first interview? Should Microsoft recruiters stop using external job-boards, and instead wait for a salary geo-fencing feature to be implemented in their internal jobs tool? What is the case law for out-of-staters who will be moving into a state with such a law for employment? How about remote candidate in Texas, working for a team based in Washington - and the reverse? There are dozens of edge cases, and for a company the size of Microsoft, can easily result in hundreds to thousands of infractions per year - the juice may not be worth the squeeze.