Smart and hard-working people find it easier to do schoolwork. Lazy people find it more costly to take extra effort with an application.
Honest firms find it cheap to provide warrantees.
People only want what the effort proves you already had in the first place. If you are honest and provide good products, it is cheap to do so. If you are dishonest and sell junk, it is very expensive to do so. Customers see this and buy from you. If you are dishonest, this would be prohibitively expensive, so dishonest suppliers don't even bother entering the market.