We shouldn't fear ideas just because it could be used to restrict some users of some systems. In the end, there will continue to be a market for less regulated hardware and OSes. Linux and the BSDs, as an end user if you own the system, are still wide open. x86/x64 systems aren't getting more locked down in general, and there's a significant movement toward more open hardware (at least within some niches) with RISC-V.

Something like capability based security would be a godsend for the corporate and enterprise environment compared to what's commonly in place.