That's on a personal level. As far as companies go, it should be "never attribute to stupidity which is adequately explained by malice."

This also goes for assuming good faith -- when companies reach a certain size, the mantra instead becomes "always assume bad faith."

>Or more likely because that costs money to implement

Kinda like how paying devs to push firmware updates to a damn microwave costs a lot more money than making a microwave that just works and doesn't need OTA updates?

Yes, but you cant sell the 'regular' microwave for more because its special. And there is no way to sell marketing data with a regular microwave.