I think the scale doesn't really work all that well for most RTS games for strategy to be really viable. TA and Sup Com did have a bit of strategy and a lot of good tactics involved because of the massive scale and steady resource available. Against a half decent player or a well set up AI, just building shit and sending it out in a war of attrition didn't really work. You had to work out different approaches, tactics, co-ordinated assaults etc. to divide and weaken the enemy long enough for some killer blow. Even so this is a combat orientated, low level style of strategy. Another game that had elements of long term strategy built into the experience was Earth 2150 where all your tactical decisions were based on getting the most from as little as possible in order to complete a long term strategic goal. Strategy cam from working out just how best to clear out each area of resources without wasting units or resorces. Most RTS are far too low level for grand strategy to be useful, though there are a few abstract types of games like AI War where you need to have some overall plan from the get go. Otherwise most games that try to add strategy do so in the Total War hybrid style or the 4X style of game.
Depends what you really mean by strategy though regarding RTS games. You're not going to get War in the East type of strategy in a RTS, for the most part.
Anyway, I always loved the huge scale of TA/Sup Com and the slow but methodical way you'd arm wrestle your opponent for victory(unless you got lucky with a rapidly built group of 15-20 light tanks and caught the enemy commander scratching his balls! heh. ) so I backed this for $15. Hope it reaches a proper campaign tier before the end(one of those tiers has got to be a campaign mode!).
