[ameister14]

Just because something directly harms the competition doesn't mean it's unethical or immoral. If it doesn't harm the stakeholders, it's fine with me. This isn't pouring waste into a river. This is going in and poaching the opponent's resources.

I also don't think it's inherently dishonest to do things like offer referral bonuses for getting the competition's drivers to join your service.

Were I an investor, where would I get the impression that they would shamelessly cheat me at the first opportunity? All they've done is improve the likelihood that the business I have invested in wins out.

[johnvschmitt]

Abusing the cancelation policy is the specific immoral act I'm calling out here. Offering employment invitations is fine.

But, often a company has very forgiving cancelation policies to be customer-friendly. By abusing those cancelation policies to do a DDOS-style attack is going to lead to adverse impacts on the ecosystem (less forgiving cancelation policies, drivers & riders wasting time chasing bogus reservations, etc)