On the other hand, a lot of the products that RH gave to IBM were really painful to use. Let me preface this by saying that I mean no disrespect to Geoffrey and his amazing work! And, also, I suspected I was too dumb to understand OptaPlanner in particular.
But OptaPlanner was definitely amazingly painful to use. The docs seemed horrible to me at the time, and the UX of the product was on the level of "the source code is there, to solve your problem, just understand the code base..." To model your problems meant that ideally, you'd pay for Red Hat's consulting, which would give you indirect access to the dev team, which would help you put your problem model into OptaPlanner.
A lot of the JBoss products I really liked were like that. Now, they'll die by slow death over at IBM with nobody giving a damn. I guess such is life.
I wish Geoffrey all the best with Timefold! I truly hope you'll turn it into whatever you desire, and that you'll always have more customers knocking at your door than you can handle!
[1] https://www.redhat.com/en/blog/evolving-our-middleware-strat...