You can't generalize all inkjet printers. I use a Canon Maxify Injket in my company (we print only ~200 pages / month) and it's amazing. There is no laserjet that could compete in price/print.
Sure you can. The difference is in usage pattern. If you use printer rarely, ink will dry out and you will have to clean the head (using lots of ink in process) or replace cartridge. On the other hand with the frequent usage laser printers become cheaper per page quickly. I once had Epson Stylus 800. Sucked big time. Replaced with HP 6L, never owned an inkjet again, never will.
I don't print 200 pages a year. I might not even print 200 pages in 2 years. At my usage level I would have to buy a new freaking inkjet cartridge EVERY TIME I wanted to print because they'd be dry.