If Colorado passed legislature requiring cars to have better emission requirements, nobody would sell cars in Colorado.
If California passed that same legislature, every auto firm would update their cars to meet those emissions standards.
Which is exactly what happened.
When you're a big enough market, the cost of dropping you isn't worth the benefit of non-compliance. NYC is huge, and has a lot of jobs that people commute in to - which would all be affected by this.
NYC is also a terrible source of remote workers for other jurisdictions: high salaries, taxes and onerous business regulations. Most Canadian companies somehow make out OK excluding all of Quebec (and it's ~22% of the population), so I don't see excluding NYC from your pool of potential remotes being a big deal for all but the most specialized US companies.
Quebec has a history of being a separate economy, and speaks an entirely different language from the rest of Canada. While in theory, everyone is expected to learn cereal box French, in practice, most anglos don't bother.
NYC has an economy five times the size of Colorado, and tons of already established firms already operating in it, which would have to comply with this law.
This thread keeps talking about remote workers, when remote work is an incredibly tiny minority of all employment. It will follow employment trends - when in-office job postings start having clear salary statements, remote will follow, if only to remain competitive. And all it will take to make this happen is a few metro areas passing laws to this effect.
If California passed that same legislature, every auto firm would update their cars to meet those emissions standards.
Which is exactly what happened.
When you're a big enough market, the cost of dropping you isn't worth the benefit of non-compliance. NYC is huge, and has a lot of jobs that people commute in to - which would all be affected by this.