You can't be seriously suggesting that Apple did all the work to put only USB-C ports on the computer so that people would pay them "tons of money" for adapters. For starters, the adapters are cheap and can be purchased from any number of retailers that aren't Apple but, secondly, I have had to purchase 1 single adapter that has given me all the functionality of having these multiple ports and I've literally used it twice (once for the VGA out and once for USB). They didn't remove the old ports to get money out of people just like they didn't remove the headphone jack from the iPhone to get money from people. They did it because they feel that USB-C and wireless devices are the future and they're not wrong.