Most devs have a day time job and a private life. Funding is mostly done from private means, although there is the pre-mine, which is mostly untouched.
Acceptance is promoted through meetings and contact (one devs visited the TEDx event in Reykjavik last week to improve contacts with some of the speakers there (there has been contact with those speakers before)).

Personally, I'm rounding off things from an old job (finishing my PhD thesis) part time and use the other time to work on Auroracoin, roughly 15-20 hours a week currently. I make my income through trading.

Also, regarding Project P a demonstration of our prototype was shown last week (to show that Auroracoin works in their idea) and contact is being made now with a company to see if they would be able to implement it into their products.