My addendum:
There is a glut of good small business opportunities out there right now, especially because the Internet makes it ever so easy to market, generate traffic, etc.
I want to also point out that entrepreneurs ought to consider not taking ANY outside money at all, which leaves them an option of running a cash business for years, without being forced to have an exit. The moment, however, they decide to take any outside money, they have to exit, and that’s not necessarily always desirable.