They seem to suffer from 'propriety hell'. It's what I call companies that made something that blew up, only in the 'clone' world. Then they started doing stupid shit like making everything propriety, instead of leaning into the open source market, and miserably failed. UNIX is an example of this. They patented Sys 7, and failed. IBM did the same shit with their PC. Now what was once 'IBM's PC' is just 'PC'. They could have just made everything open, and asked everyone to just mention their name. It took a long time for me to even realize IBM made 'the PC'.
Like consider this, it took them SEVERAL years to open source Jikes, and they STILL haven't done it fully yet
they began open sourcing it in the LATE 90s! Fuck man.
Nobody even said anything.