Capitalism pretty much demands it. Some companies can delay it for awhile, but the numbers must go up and eventually expansion because of a better product reaches it's natural limit.
Basically, yes.
With compensation so completely tied to "did our stock go up since you joined?", it's a whole thing.
Corporations always operate at the lowest morality level of any member of the company. Lots of executives can say no to dark patterns, but it only takes one to say yes. Then that exec gets to report the successful revenue boosting metrics. They will tend to get promoted and soon the entire leadership team is filled with people with the lowest ethical standards.