The incompatible license is the GPL. I think that's where your problem lies. IllumOS, FreeBSD had no problem at all adopting them.

Linux was GPL licensed long before these projects were open-sourced under CDDL, and there are obvious reasons for why Sun at the time would not want to have their technology advantages incorporated into Linux (like it being their main competitor to whom they were losing in the market place).

Crafting a new GPL incompatible license for ZFS and DTrace resulted in Linux not being able to incorporate them.

You are simply dead wrong here. And Bryan Cantrill has said so publically.

Sun NEVER intended for Linux not to adopt it. They wanted it to be ubiquitous across all open source platforms.

IMO they should have two claused FreeBSD licensed it but they didn't.

Bryan Catrill says one thing.

Danese Cooper who was responsible for drafting the actual license while at Sun says another thing.

Obvious business sense stands firmly with Danese, it would be very stupid of Sun to hand over the best technological advantages of Solaris to their main competitor, which was Linux, while struggling against it in the market.

Open-sourcing Solaris was a last ditch effort from Sun to attract mindshare (and eventually market share) back from Linux, that plan would be doomed beforehand if Linux could just pick the best parts of Solaris for inclusion.