While your thinking here makes sense, it is better to honor truly Free as in freedom / Libre / Open Source software instead of funding proprietary software. FLOSS is also made by hard-working people and given away mostly and used by people who make money. But if you support FLOSS, your support goes to help everyone in the world, whereas if you fund proprietary software, you help advance something still under exclusive control by the company and not respecting everyone's freedoms.