That actually happens more than you might think. I've worked at a couple of open source product companies in the data management field. In both cases we had dea

That actually happens more than you might think. I've worked at a couple of open source product companies in the data management field. In both cases we had deals from corporate users who wanted to ensure we would continue to maintain software they liked. The sums are not small either--I've seen them run into hundreds of thousands USD. It definitely helps keep the lights on--and also helps justify the open source model to investors and the like. (Anyone reading this who has done such a deal, y'all rock.)