Because our government has failed to protect us from monopolies or duopolies. How many things can you buy with modern technology that you'd say the brand had integrity?
Competition enforces integrity? I can see how it might help, but I'm afraid it's a deeper moral problem
Yea competition only enforces integrity if consumers are selecting for integrity. Without getting into a nitty grityy morality debate, you've got an obvious first issue here that many if not most people dont know what they are buying when it comes to tech, so we cant expect a market to correct for our perceived morality if the consumers havent even got a clue they're being slighted in the first place.
Integrity can be bought and compromised.
In fact it seems like many (most?) decent startup products end up rugpulls.