Arguably there should even be open source printers by now.
Nobody gets to graduate college and become rich by maintaining a solution, so you get people who make products worse to show an increase in profit to justify their salaries and promotions.
I have a black-and-white laser Brother printer from over 15 years ago. Never changed the toner, comes out once every few months for the rare occasion I need to print something. I love it
1) It's hard for any business to keep selling a product at 10% profit margin when you know you can sell it for 200% profit margin with the price increase not affecting sales.
2) In the rare situation that a business would accept low margins 'just to be nice to the customer' - they'll just get bought out. It's hard to not accept 10 years of profit for a business when it's being offered to you.