>I wouldn't be surprised if Greece has strong NIMBY factors.

No doubt. You see it in tourism economies the world over.

Cheap services + cultural/historical novelty + nice climate make tourism highly viable -> tourism becomes outsized part of economy -> those enriched by peddling tourism write the rules to their benefit -> it becomes all but illegal to develop any other industry, build housing, etc, etc because all this activity winds up punitively regulated lest someone do something that scared away the tourists.