I WAS freelancing at between $75-$100/hour, but having to work very hard for every contract. On the side my partner and I were building software, selling a nice amount but nothing that was going to allow us to retire in a year.
However, suddenly people starting emailing us after purchase, asking if we could build custom versions for them. Most turned out to be duds, at first, and then something changed. Suddenly we're charging weekly retainers and working on near six-figure projects, all on business that sought us out because of our software.
Will this work for everyone? I'm not sure, but it did for us, and we didn't even see it coming.