If you listen to the Apple time warp podcast interview with Chuck Somerville”. He talks about chips challenge/ chucks challenge /chips challenge2 and the licensing from the current owners. It’s actually kinda a fun listen about Apple ][ development.

http://appletimewarp.libsyn.com/apple-time-warp-podcast-epis...

For those that like reading more than listening ars summarizes it

https://arstechnica.com/gaming/2015/06/how-an-early-90s-wind...