My guess? They used the pandemic as an excuse and noped out after interacting with them and getting that “hey these guys are going to kill some one.” Feeling.
Specifically because OceanGate was cheating out every way they could- including on validating their design with full scale pressure tests.
They also didn’t have any sort of inspection on the pressure hull- which there are very, very few materials that can take cyclic loading and not fatigue over time (even if it’s still only elastic deformation, most materials will fatigue and fail,).
Doing so under these extreme conditions? Yeah. It’ll fatigue and fail sooner rather than later.
“You want to use CF and not do testing for fatigue? And you want to put people inside this thing? NOPE!”
Which, Boeing also dropped them…
Yeah, me too.