Agree, in my last band (punk/Oi originals) we gigged pretty much every weekend, all over the country and in Europe, and we probably turned down twice the amount of gigs that we actually did, a large majority of the gigs both played and turned down were what we were offered rather having had to go looking for them.
Playing on a defined scene helps big time, as does organisational skills, get defined duties for each band member aligned to their strengths and it’s possible to turn over some decent money especially if you’ve decent merchandise.
We never took anything from the band but doing it this way paid for hotels, flights, ferries, tourbus & driver hire. If we’d been of the mind to each take our £50 at the end of the night and drink it back over the same bar we’d never have done a tenth of what we did - and they’re still going strong (probably stronger) now.