That's not the worst part, they don't even have to make a profit later. They just burn capital to keep prices low, put enough competitors out of business to make the IPO/sale attractive then cash out to the rubes who bought their BS.
After that, why should they give a shit? The VC/founder business model NEVER has to work long term for the players to win big.
@Tallish_Tom @aral yeah, but you need to at least "make the effort" to make the IPO and that someone is interested. See Reddit's (poor) attempt at it by killing third party tools or making them pay insane amounts; and all the ads and gift-thingys they show you.