This is almost always not true.
There are "residential" VPN providers, but they are scammy AF. The only way to get access to a true residential IP is via some proxy/gateway software run by a customer of a real home ISP. These are usually obtained via botnets of infected PCs.
Users of residential VPNs are usually using them to scrape sites which try to prevent scraping and so are probably happy to turn a blind eye to where they get their IPs from.
They're also much more expensive then traditional VPNs.