I'm sure gun runners tell themselves they're just helping innocent people protect themselves. If your basing your company on the idea that it's is above the law then I guess you have to ask where's the line. What laws do you follow and which ones do you ignore. to me it seems like a slippery slope.
There are actually terms in law for drawing such a distinction: malum prohibitum and malum in se.
Malum prohibitum means "bad because forbidden". It includes most regulatory law, requirements to have licences to do things, drug prohibition, etc.... Some of these prohibitions are probably necessary to have a society people actually want to live in, but many are more debatable and some actively make society worse. Prohibited conduct varies greatly between jurisdictions.
Malum in se means "bad in itself". It concerns directly causing harm to others. While some edge cases vary, almost every legal jurisdiction has general prohibitions on murder, rape, theft, fraud and such.
I'm not aware of any significant controversies in which Airbnb has been accused of the latter, nor Lyft. I think most people can tell the difference between skirting regulations that many people honestly believe don't serve the public interest and tolerating sexual harassment or deceiving contractors.
