Yes, people love getting stuff cheap. But if, say, an auto shop was offering cheap oil changes because they're just dumping the used oil down the sewer instead of properly disposing of it, "people like cheap oil changes" isn't justification for the continued harm.
Tell that to nearly the entirety of the global textile, chemical and energy industries (to name a few). Causing harm is not, nor has it ever been, a deterrent to operating a business.
Sure! But "other industries do bad things too" does not excuse these companies doing bad things.
The Italian government can't do much when a Chinese factory pours chemical waste into the ocean. They can stop Uber Eats from screwing over Italian delivery drivers.
No, but losing money on every transaction (or the majority of them) certainly is. In that sense, food delivery apps smell a lot like Moviepass. Customer love was not enough to save Moviepass, though it certainly didn't help that the actions they took to turn it around burned through all that goodwill in very short order.