Indeed. It seems like we're finally seeing a smidgeon of movement in this direction lately as well. Lattice have been at least semi-friendly to people building OSS support for some of their FPGA's and now QuickLogic have come out with some explicit support[1] for OSS as well. And I have to admit, given that AMD have been at least a nugget more friendly to the OSS world over the years, I'm harboring a faint kernel of hope that Xilinx may move in this direction a bit as well, under their stewardship[2].

[1]: https://www.quicklogic.com/qorc/

[2]: https://www.amd.com/en/corporate/xilinx-acquisition