Even the professional Epson SureColor 800 ($1200+) have that problem. When you have to buy five of them to keep up with your businesses' workflow (one of my clients), it starts to cost money one cannot spend.
Just curious, I have an SC800 (the model has been discontinued). I've used the printer (fairly lightly) and not run into issues (yet anyway). Not real clear what limits to number of prints or other EOL criteria you've observed. Interesting that up to now haven't heard/read about such problems.