alt Hacker NewsThink academic and small companies who don't pay for support opening corner case issues all the time publicly. They want none of the complex support unless you pay (reasonable imo).
And for those who forget RHEL for instance has to pay salaries to back port fixes and such and the same logic applies here.
Xilinx is/was an FPGA company until AMD bought them. Their primary revenue stream is selling chips. This is the equivalent of going back to the days of paid C/C++ compilers (anybody else remember that?).