OGLgate came close to driving me away from D&D specifically because some of my favorite D&D content originates from outside WotC/Hasbro, and the continuation of that content was directly jeopardized by WotC's plans.
They backed down in the face of outcry and bad mainstream press so I stayed, and the placement of 5E's SRD in Creative Commons has largely eliminated my concerns about that specific problem arising again. The affair did leave me uneasy and mistrustful of WotC/Hasbro, though I still don't think they can be categorized as anywhere near as bad as many major corps are.
I can't imagine that there is anything similar that WotC could do with D&D that would (potentially) change the way I viewed D&D like OGLGate might have had it gone as originally intended by WotC, but then again maybe they'll find a way.
I voted "3". What WotC does doesn't define D&D for me, but it is not inconsequential to how I view D&D.