Nice website actually..they seem to offer a lot of stuff and look very pro and successful IMHO... but when you read through this site, you will realize that the only interns that they actually offer are for only 3 weeks duration (for newly trained MSDT's), so i doubt that these will actually be selfresponsably guiding divers in cozumels marine park. these are MSDT interns, that means they become qualified to teach several PADI specialty courses...so i would suspect they are rather shadowing more experienced instructors when teaching these courses, and not guiding? (as this is what an MSDT interns should be about?) ...and also, their academy is located in riviera maya and not in cozumel..
the local dive shop dive palancar by the way is (was?) not that "small" as you suggest, I remember they had moored like 15 (!) boats or so, righjt in front of the hotel , that in fact makes a large cozumel operator and no small local fish. so, they have lost the allegro concession a few years back, now they lost the occidental grand as well, and apparently just a few months back they also lost their concession at the wyndham, after they just operated it for a few months only (sanddollar lost it before that after many years of service and was ousted by dive palancar,so it was a similar case i guess) only then THEY were the culprit).
bottomline, i would suspect that maybe its not just foreign corporate shops taking over because of greedy hotel owners as was declared in the beginning of this thread, but maybe there are some other reasons for all this?