They have, and likely will continue to do so if they believe they'll get ample business from you.

I got comp'd from SPG plat to HH Diamond by demonstrating my continued stays in the same city for several months, with many more months to go. The city, New York, had many Hilton options, so they threw me the bone. 256,000 base points this year alone. 775,000 total points in the last 2 years. I think they made the right decision.