It is sad, but is it sad enough that if a large co offers to buy your company and make you very wealthy, you're going to decline?
Sorry for the cynicism but this cycle of adopting a software tool only for that to be bought out and subsequently shut down is getting pretty old. I'm sure Mint's initial sales pitch was also about passionate founders who cared about their customers. This is probably the nature of companies--no one will care as much about a product as much as the people who first created it, but the cycle seems so much faster with software.