I worked in the luxury hotel and resort field for more than a decade. Hotels change flags ALL the time! Ownership changes on a regular basis. This isn't something new. When booking a trip, you do due diligence on where you're going. Even if a resort gives full disclosure (lease vs ownership...which they are under NO obligation to do), there's no guarantee someone else won't buy it before your stay.
I worked for one company for just over two years. During that time, I worked for three different companies!
People are making it sound as if this was the first time a resort ever changed hands! PS....it's not!! Couples is, and will always be....first-class in every way.