It does ruin it for you when the next installment of the game you like is barely a pinky promise that 5 years from now there'll be enough content to play something. Live service is gaming cancer
Ultima online wasn't a "cancer" to the gaming industry
I wish Final Fantasy XIV ruined the franchise so we didn't get the abomination that is the latest two installments.
Greedy shit developers make shit products, no surprise. But GemStone, Asheron's Call, World of Warcraft (the early years, I can't speak to the latest) and other forms of long-term games offer a chance to experience a world for years in an additive environment instead of waiting for the next installment of starting at ground zero again.
They do when there is a limited amount of AAA games to be released every year and they take up an increasing number of spots.
The with when people talk about the MCU and superhero movies, just don't see them but they fail to realise that they monopolize talent and industry players as well as release spots.
An example in gaming is GTA, it's been 10 years since we have had any non live service content. So the people who "don't like the model or genre" are left with less than they would have been...which is to say it is ruining gaming for those people.