I think that there are many potential causes, but I would like to add monopolization to the list.

Usually, a bad release spelled the demise of a company, because release times were so long that competitors could take advantage of a bad software release.

People aren’t going to switch from windows because they release something bad or buggy, in that case it would already be dead. Windows isn’t technically a monopoly, but they have a lot of inertia and there are many programs that only run on windows that people depend on. There is perhaps a limit to how bad windows can be before people abandon it en masse, but they can get away with a lot. The tech world is full of different companies and programs that are in monopolistic-ish positions.