Excellent point. If you really want to make your project open out of the goodness of your heart, then use GPL. Otherwise you are explicitly giving any business, no matter how big or wealthy, permission to use it with no expectation of giving anything back. The license says that quite clearly. It says nothing about rewarding the author.
To be clear, so is GPL, but it puts minimum requirements on distribution, which only a literal money vulture would be opposed to. It doesn't hurt any actual people to use AGPL instead of MIT.
