I suspect it's a compromise after pressure from both manufacturers and repair services; manufacturers so that repairs are gatekept, and the cost of repair remains relatively high (because the manufacturers control the supply and cost of replacement parts and tooling, e.g. with Apple providing certified repair places with tools (wasn't that on a lease / rental basis?)); if repair costs remain high because you have to pay someone else to do it, people will consider buying a replacement instead of keeping their devices.