Thanks for the input. I would like to hear better names for this idea.
Yes, the idea is similar to crowdfunding. I think there is an important difference though. I see conditional donations working under some form of a website that directs donations to effective charities. Donors would thus be able to set many conditions for the optimal allocation of a specified lump sum. The main gain that I see is that this allows for more optimization than in a normal crowdfunding implementation, where you might have to split your budget.
It seems to me that the combination of generating profits to support other EA orgs and having EAs as the target consumers would not be optimal. Because EAs already donate, by profiting off of them, profiting-to-give could, rather than moving more money into the EA movement, just be moving donations from what EAs would choose to what these profiting-to-give orgs would choose. It seems to me, then, that targeting regular consumers would be the best way to maximize the money coming into EA from this strategy.
Edit: it seems to me now that what I described above would only apply if EAs were actually trying to maximize donations through minimizing expenses instead of donating a fixed percentage every year (which I don’t think is usually true).