Thee's already cheap ($50 and less) FPGA boards. But all FPGAs are proprietary, there's no available documentation on the internals, the bitstream, and many oth

Thee's already cheap ($50 and less) FPGA boards. But all FPGAs are proprietary, there's no available documentation on the internals, the bitstream, and many other things one need to create 3.party/open source tools. And I also suspect they're hard to impossible to reverse engineer.