Why? Color laser printers are getting fairly cheap (mine's a basic printer, granted, but it was quite a bit cheaper than the cheapest EcoTank models). You don't have to worry about your ink drying out or print heads getting clogged.
No doubt your printer serves you well, but that doesn't mean it's a good solution for everyone.
On the flip side, my company has a set of 3 hp printers that we use twice a year for printing stuff at the last minute for our two conferences, which are less than a month apart. We have to buy new print cartridges every year, cause the ink dries in the container. I think our cost per page is probably close to a dollar. This year we had to throw out a number of unused cartridges because they dried out in the package, despite being less than 18 months old.
Moral of the story is that inkjets suck no matter what, and the biggest downside of laser printers is their size.
There was a time when cost per (large format) page (high to low) was inkjet, laser, electrostatic.
In fact, with our print volumes, switching from inkjet to the $100k electrostatic would pay for itself in 3 months. Inkjet prints cost $1.40 per vs 0.10 for electrostatic. Laser was somewhere in the middle.