Back when I was housing insecure but still had a place of my own to live, I first set up a point-to-point wifi link to some kids across the street to defray my internet expenses - they paid part of my bill instead of having their own internet. That was more than a decade ago and the hardware & software weren't so reliable. When the arrangement fell apart and I no longer could pay the bill, I cracked the network of some neighbors in my building and used the same antenna to provide internet for myself and 3 others in my house for about a year. The neighbors were a nice young couple so I did my best to be decent about it - set up an always-on permanent VPN and used flow control to limit our max throughput.
It's still possible to do this, and I'm still broke, so after a few years not needing to do any such thing, I cracked a network to have internet during a housesitting gig (house did not have internet).
Edit: get WiFi 6 or better gear for this. Trust me, the improvement in performance in marginal situations is well worth it. WiFi 6 was a big improvement over WiFi 5, which was a big improvement over WiFi 4, when it comes to staying connected and getting data across a dodgy link. I haven't done much straight up piracy lately but I have done plenty of leeching in parking lots, and WiFi 6 gear is absolutely worth the money.