The altruistic model seems to be doing not that well. The number of editors peaked in 2007 and has been going down since.
https://en.wikipedia.org/wiki/Wikipedia:Wikipedians#Number_o...
https://en.wikipedia.org/wiki/Wikipedia:Wikipedians#Number_o...
https://en.wikipedia.org/wiki/Wikipedia:Fundraising_statisti...
https://en.wikipedia.org/wiki/User:Guy_Macon/Wikipedia_has_C...
I am pretty sure that they would welcome comments from Hacker News users on that page.
Maybe they could alternate their fundraising banners with "contribute to an article" campaigns?