Xerox PARC had a ton of innovation and world-class R&D, but consumers didn’t benefit from any of it until smaller disruptive startups made good use of it.
Whereby the disruptive startups disrupted the very core of the innovations, namely one integrated environment where every component was 'aware' of the capabilities of others, and you could build and interconnect them in a visual way.
Instead we have house of cards, layered up on top of each other, without regard for the bloat, impedance mismatches, (intentional) incompabilities and cognitive load that brings with it.