I don't have a problem with companies making money, but I do have a problem with printer manufacturers.
Printer makers don't make money off their printers. They make money off the ink. Every printer comes with ink. Like any good drug dealer, the first one's free. After that, to replace the ink, you spend half the price, or more, of the printer.
Exactly how much ink is in a printer cartridge? No one is telling. But an HP printer cartridge costs $22 per quarter ounce! That's almost $8000 per gallon! No wonder they don't want you to use third party ink.