It's a natural sequence of events. The original small team or individual has a vision, puts in whatever time and effort it takes to make it a reality, and if the money gets tight, they do whatever they have to do to survive until the game pays off. Money may (or may not) be a long-term goal, but may only be a secondary consideration in the short run.
Then they're successful, so they hire a bigger team. The new guys aren't going to go without a paycheck or take large pay cuts if things aren't going well in the short term, and any loans taken out need to be paid on time, so the company MUST make at least a certain amount of money just to stay in business. If that means shipping an incomplete or inferior product, then so be it, whether the original creator likes it or not.
Worst case is when the original developer turns control over to a bunch of investors or managers, who have no interest in the product itself, only in its ability to generate revenue. Quality inevitably goes down the toilet, innovation is kept to a minimum in favor of "safe" ideas, and we end up with a shovel-load of garbage being churned out on a mass-production line. Look what success did to Bethesda, or any of a handful of other game companies that went from a few people with a dream to a sizable corporation.
I suspect that TW is (mostly) in the middle situation, with pressure from investors as in the third case, but Erdogan still has a fair amount of control. I suspect that the problem isn't so much him, it's the rampant growth of the company which makes this kind of behavior all-but inevitable.