You are free to do that. Some, such as corporate customers or those just concerned about security, may want the original binaries as compiled by the company that is selling them. As snowgirl pointed out, you are not free to take those binaries and redistribute them at will.
I like this. This is the type of open source business model that I think a lot of people have been looking for. We want our software to be open. We also want to feed ourselves and our families.