Some firms buy on TA too... Some firms pay big money for people with proven TA techniques... I watched a video awhile back on black box trading (trading by software algorithms)... MMs use TA, and a lot of trades that control the market are from MMs... There is definitely a world of big league TA traders out there...
Sure, I wouldn't doubt some firms buy on fundamentals too, maybe even only fundamentals... Some firms won't buy pinks, it's all a flavor...