Interestingly enough, Tanenbaum doesn’t seem to mind what intel did.
Yeah, duh. Intelligent people read licenses before they pick one.
But there are some examples out there of people regretting releasing their work under a permissive license.
That's like signing a contract before reading it and then complaining that it contains provisions that surprise you when they are enacted. I'm baffled on a regular basis by how many people understand FOSS licenses only on the basis for hearsay, for example when people insist that GPLed source code must be made available free of charge for everyone. The GNU project has a FAQ about the GPL that spells it out that this is not the case and yet hardly anyone discussing FOSS licenses has even read the FAQ.