Ummm someone I know works on LOB applications.

They would run their application on the CTP, then the RTM, and then on the development server, and finally tell the business to upgrade its hosted platforms.

The business eventually forced him out. Then they forced someone else who could do it out. Now there is nobody to do it, and they will likely be stuck on 2012, a few CU behind, for the rest of eternity.

But you know they don't even use the 2012 features anyway so it's not a huge deal. Why? Because one customer insisted on running their own server, and that server is stuck on 2008. As a result, that's the version the LOB must target, and the entire business (and its tens of thousands of other customers) gets held back.

Fun. Moral of the story: If you do an LOB application, and a customer wants to host their own, make forced upgrades part of the contract.