Not true by any standards, the only reason gaming is currently being held by MS like a stanglehold is completely because of DirectX! The monopoly powers of Windows OS is holding gamers, and overclockers, on a single platform. Microsoft refuses to share a widespread graphics interface like OpenGL (that everyone else supports). It's a very cut throat tactic in my opinion, but if you look at a lot of different MS stuff, it supports MS's position on keeping everything proprietary.
Now based on that picture, make a conclusion why MS uses Direct X.
well your right and wrong, the reasion linux dosnt get more games isnt 100% the fault of ms or directX.
alot of game companys refuse to support linux for the same reasion that alot of hardware companys refuse, its to hard to support all the diffrent distros out there.
there are tens of not hunders of thousands of diffrent distros, no 2 are 100% alike when it comes to installing software and drivers, if linus would get togather and make an ISO for drivers and app installers they would get more support from software and hardware companys, till then, well linux will remain the toy of geeks who eather cant coap with windows or who are mad that they have to upgrade every 5-10 years to beable to run windows smoothy(alot of linux nutters are still using p3 systems for example)
i got nothing against linux, but its a fact that till linux community can put aside their diffrances and agree to include 1 way of doing some things on ALL distrobutions then hardware and software makers WILL look at linux as a high cost for low returns proposition.
EDIT:
part of why is because ICD for ogl on windows are SHITTY from all but the top name makers of videocards, u know why ms made directX to start with, they wanted something they could get support for that any hardware maker could/would make a working driver for, back then OGL icd's where timeconsuming to make and most card/chip makers if they even had ogl support it was VERY slow and VERY buggy, the advent of dx wasnt a bad ting, its how ms handled it afterworld and how the OGL comminity drove ms away when they tryed to do a combine standred called ferinhite(sp) the project was going well, ms was making consessions and bending, but some of the people on the ogl side wouldnt make any consessions or bend at all, and infact got combative, this as been admited by the ogl lobby that was invloved, ms walked away, and i cant blame them....
oh and if those ogl2.1 shots are doom3(remind me somehow of doom3) they are acctualy ogl1.3/1.4, alot can be done with ogl, and even dx9 that wasnt ever fully exploited, ogl2.x in some ways is more powerfull then dx10, but as even Id games leader carmack(asshole ati hater) has admited current ogl is missing some fetures that have been made requiered in dx10, ogl2.3 is acctualy finnlized last i checked but not in use yet(just as dx10.1 isnt in use yet)
sorry for the edit but i wanted to clarify, there are reasions behind not using pure ogl, tho they are far smaller now days then they use to be, oneof the main ones nodays is that programers need to relearn to program the gfx engine in OGL because to many of them have gotten VERY lazy and only know d3d/dx enterfaces.
OH, about linux one last note, it has NOTHING LIKE DIRECTX, dx isnt just d3d, its also direct imput, direct sound, direct music, and more, linux really needs to have the bulk of the community sit down and make their own dx equivlant so that each game dosnt need its own hand coded replacements for dx fetures.
I would be happy if they stopped using DirectX altogether. Most in game graphical errors can be directly related to problems with DirectX. OpenGL should be adopted as the choice.
Anyway, off to chem lecture... 
