If people want to buy oatmeal sell them oatmeal.
Its the old cheeseburger thing. I want a cheese burger."how about a nice pizza"
"Cheeseburger"
"I'll put pineapple on the pizza"
"Cheeseburger"
How about this steak
"Cheeseburger "
"I'll put peppercorn sauce on the steak"
"F sake give me a lager"
"We have a nice APA and a delicious IPA"
......
Okay.
So you go all in for cheeseburgers. You make ten billion cheeseburgers. They sell pretty well for a while. Cheeseburgers are popular!
And then when people start wanting something else, what can you do when your entire infrastructure is built around selling cheeseburgers, cheeseburgers, cheeseburgers, and also cheeseburgers?
'Cause the--let's be real--
decidedly more mixed response to 5.5, despite it being damn near identical to 5.0 (just as 3.5 was damn near identical to 3.0) seems to be showing that we don't have 100% perfect agreement from all corners that cheeseburgers are all the customer base wants. It in fact seems to show exactly the opposite--that people have had their fill of cheeseburgers and would like a
bit more variety, and WotC is struggling to support that because they went
all in for a structure that has no ability to support pizza, steak, tacos, fish-n-chips, fried chicken, etc. Hell, it can barely even support near-adjacent things like hoagies!
Unless folks turn to 3PP. WotC has benefitted
hugely from the overall anti-3PP culture-of-play in the 5e community. I say "overall" because, from every source I've ever looked into and every effort I've ever made, the general stance on 3PP is one of the following: (1) "Absolutely none,
thankyouverymuch." (2) "I like <this one specific 3PP product> and NOTHING else." (3) "I don't actually like baseline 5e and have left WotC behind" (rare, but worth noting, since we have a few prominent members around here who hold that position.) Exceptions always exist, but in my experience they are precisely that--highly exceptional.
Failing to expand is going to do 5e in. But 5e isn't
built with expansion in mind. It's built for the weapon of first resort to also be the weapon of last resort, with
nothing else to fall back on. That's one of the three reasons why the new UA Psion is literally just "a weird flavor of Wizard with actual class features". That's why Advantage is so rampantly overused that GMs rather quickly run out of ways to actually reward creative behavior once players get to the middle levels, because Advantage is handed out like candy.
As with so, so, so many things in our current capitalist
paradise, they chased the short-term dollar and got it good. And now they've
reached "long-term", and they're getting caught holding the bag because they didn't plan or prepare or even
think about what they'd do in this situation until it was already too late to respond.