There are several forms of exits. IPO is the rare exit. It is for the best of the breed. By definition most startups are not there, will never get there. Getting bought by a bigger company is a respectable, lucrative exit.
And there's the non exit exit. You don't go IPO. You don't get bought. But you become profitable. You start minting money. What's there to complain? I'd hope the vast majority of startups out there would go for this "exit."