Do you want to spend your time creating a project the world finds useful, or do you want to make a political statement that gets ignored? Because any attempt to restrict the license turns into the latter.

If the project is even slightly useful, but with a restrictive license, someone else will create an alternative with a free license. The community will quickly move, and the time spent trying to push a political opinion will be wasted.

In the long term, a free software license is always going to win. Even when it's unsustainable for one maintainer, the software remains free, and if it's useful enough, others will take on the maintainer role.

For sustainability, that's going to be a mix of lobbying your government, and companies realizing they need to hire developers because the open source maintainers aren't able to do everything for free. Just realize that governments are slow with conflicting goals. And companies will minimize their costs, leaving the average open source maintainer at the edge of being sustainable.