If B=A, why would you ever think A=B?! Learn your logic, man! That’s on you.
Really though, the structure for the program is just so aggravating. I’m a Pardot man myself. (Sorry. “Marketing Cloud Account Engagement.”) Every time I try to get a client to go with it, the AE’s jump in and desperately try to throw in Mobile Studio and everything else Marketing Cloud. I always go back to the client behind the scenes and warn them that if they go that route, I won’t set it up. It’s not worth the pain.
I imagine there were 2 primary reasons, one financial, one personal:
Number of heavy users (including a lot of mods) would’ve forced Christian to implement an open-ended cost model based on individual usage, or raise rates across the board to compensate, making it ultimately cost-prohibitive for the average user, and/or
Not wanting to communicate (by folding) such a change was okay. To move to a blanket cost model is to basically admit that you’re okay with and accept the changes.
Some might say it was pure stubbornness and greed, or conclude his decision was a bad one. That’s its own topic for debate I guess.