Because you have many customers for that stand, not just one. If you have many customers and one day one stabs you in the eye whilst stealing all your lemons i

Because you have many customers for that stand, not just one. If you have many customers and one day one stabs you in the eye whilst stealing all your lemons it shouldn't be the end of you. Such criminal events are normally insured against, most startups would use their home insurance for their lemons, get their PHI to pay for the loss of an eye and its fine. If however it was your only customer, and he stabbed you in the eye, then your in a worse situation, as when the police come for him, he is unlikely to buy from you again, even more so as he is in possession of a large supply of lemons. This isn't "nyaa nyaa" this is really good advice. All businesses need to be adaptable to change or shocks. One surefire way of having problems is to have one customer. If you lose them, you loose everything. If you are writing an App which is only on one ecosystem, which can be shut off at a whim, you need to be well aware of the risks, ensure you play very carefully by their rules and have a good relationship with them. I have heard of a large company which was dependant on a small firm to make a very esoteric electrical consumable, the large company built a small surplus of them, enough to last 3 months. Cancelled the existing order with an exit clause and demanded their money back. Large firm could continue to operate with their stock surplus, small company couldn't repay the money. Large company swallows small company for tiny price. Those entites are staying nameless because its a small world.