I don't have an inkjet printer at the moment. Surprisingly, this time it didn't clog the nozzles, but the paper feed rollers, being rubber, hardened, and would no longer move the paper. I contemplated dismantling it to give them a good clean, but decided against, as the rubber is age hardened, and scratching the surface is a short term solution. Dumping it at the tip felt good.
I rarely print in colour, but I do a lot of B&W, jobsheets for work mostly, and a few letters. Many years ago I bought a small Brother laser printer, B&W only. That lasted about 14 years, with many toner cartridges, and a few drum units. The drum units are expensive, but last a long time. When I replaced it, I got another Brother, similar in size, but this one is connected to my router, so is accessible from any of my computers (4), and cleverly priints double-sided.
As described above, inkjets have a foam sponge in a tray in the bottom, to collect the excess ink, a few drops every time you print something, plus a bit at each startup/shutdown, so leaving it on saves a bit. Head cleaning dumps a lot into the tray. The tray is inaccessible on most printers, and with both HP and Canon ones I had, they 'guess' the amount of ink in the tray, and when the printer decides that teh tray foam is saturated, the printer stops working. You can clean out the foam, after completely dismantling the thing, but it still won't work until the software is reset. Couldn't find a hack online at the time. Could send the printer back to Canon, where a reset would be more than a replacement printer. Nuts.