You don't need a crowdsourced, open-source, open-hardware printer. Just buy a decent laser printer off-the-shelf with proprietary hardware and firmware. You can buy 3rd party cartridges (or even just toner to refill your existing carts) for dirt cheap on Ebay.
This is nonsense, cost of the printer is a very valid reason if you don't print very often. And what if you already bought the printer? Your solution involves trashing all existing printers, not very economical or ecological.
Laser printers can be bought for $100 now. Cost is not a valid reason.
Your solution involves getting an army of unpaid volunteers to take on a pet project that you think is important. That's not even realistic. If you think it's so important, I look forward to seeing your github page about it.