I paid for Sublime - it's my favourite editor by far. There are ways for companies to support themselves while having their offering be open source though. And I think Sublime might need to eventually to compete
Oh and also replying to the guy above. Tell that to dozens of OSS tools that had to be supported by real companies because people were not that willing to donate. Look at grsecurity for example, tmux, and the other ones i do not remember that Stripe donated 100k to.
Which gives you the incentive to make the software less user friendly so more people pay for support :)