Remote work often hits regional restrictions: a company service works only from the office country. Proxies solve it — access goes through an address of the needed region.
For freelancers this matters too: clients sometimes require work from an IP of a certain country. Proxies by country remove the question.
Stability is critical: a dropped proxy means losing an important conference call or a session. Take a live verified pool.
And remember security: send work passwords only over encrypted connections, even when using a proxy.