DoW is probably one of the best modern "classic" RTSes. It distilled all of the classic mechanics (resource collection, army management, upgrading, etc) into just refined enough without dumbing things down. It's a shame it progressively got worse with each sequel (focusing more on RPG and MOBA elements).
And there have been plenty of RTSes...the genre just lost it's mainstream appeal in general. In this very thread alone, four others have been mentioned.
Amazing game.