Originally Posted by GrayAnderson

If I had to guess, this was a lot of people. Diverting $25k/yr in spend is probably easy (even at lousy earning rates).

Yet another problem that DL is facing is that for $100k on spend on a $90-100-tier card (outside of the airline), you get:
-With United: 100-125k RDMs (the Explorer card has a 2x category for dining, hotels, etc.), two lounge passes, and 1k PQPs (not great - you can do more with other CCs - but not zero), plus the usual free checked bag, etc.
-With American: 100-125k RDMs (the Citi AAdvantage card in this tier has restaurants as a bonus category), 100k LPs (Platinum and 80% of the way to Plat Pro), a $125 discount, some earning bonuses, the free checked bag, etc.
-With Amtrak: 100-125k RDMs, 20k TQPs (enough for Select Executive)
-With Delta: 100-125k RDMs, a free checked bag, and a turd on the status end of things.

Even over at Hyatt, $100k on the CC will give you (20*2)+5=45 nights (mid-tier status and 3/4 of the way to Globalist) alongside two free nights. I forget the intermediate tiers it covers you for.

[I'm picking on this tier because [i]everyone has one in that general $75-125 ballpark, and most are $95/99.]