True... but then again I might suggest that the D&D doesn't necessarily care if established players buy the three new core books?This is kind of where I'm seeing things too.
5.5 simultaneously changed too little to remedy edition fatigue after 10 years and changed too much for alot of people on the other end.
If 5E14 players stick with 5E14, that's not really a problem. Yes, WotC won't get $150 from those players... but those players are still D&D 5E players and thus a part of the market for a lot of their subsequent product releases. Any adventure path books, any setting books, any monster lore books... those will all be able to be used by 5E14 players, so it doesn't matter than they haven't gone 5E24. They are still part of the 5E market WotC is selling to.
This is a situation where I think veteran players are once again giving themselves too much credit. Players of 5E14 think that they are the primary purchasing force for Dungeons & Dragons 5E and that everything should really be catered to what they want to buy. But I do not believe (nor do I think WotC believes) that to be the case. WotC always seems to gear their product to NEW players. Opening up their market to the wider world, not constantly trying to just re-sell and re-sell and re-sell product to the same people over and over again. But yet veteran players around here often act and speak as though that if they don't buy what WotC is selling that WotC is going to be in trouble. But nothing could be further from the truth. WotC is fine with whatever those players choose to do.
If veteran 5E players feel like the messiness of 5E14 was becoming just irritating enough that they wanted to join the new players coming in through 5E24... WotC certainly wouldn't say No. But they also I don't think care if they do or don't. After all... veteran players are just as likely to move on to games like Level Up or Shadowdark or Tales of the Valiant as they are anything else (including 5E24) so what's the point in trying to grab onto them so tightly? If they move to a new product, they move. No big deal and not a WotC concern. There's always a large swathe of new players coming in to cater to instead.