That powers are sometimes used for good does not imply the existence of those powers is a net positive.

No but I am for Google and Apple investors holding the management to their fiduciary duty to turn a profit. Lobbying for gay rights seems very loosely connected to that goal.

Edit: There is not a fiduciary duty to turn a profit, but there is a fiduciary duty to put the corporation's interests above your personal interests.

There is no fiduciary duty to turn a profit

You are right - thanks for the correction. However, there is certainly a fiduciary duty to put the interests of the corporation above your personal interests as a high-level manager.

Yes, I'm against corporate lobbying in all cases, even when they're lobbying for causes that I believe in like LGBT rights and net neutrality. I would be quite a hypocrite if I only supported corporate lobbying when it was for causes that I agreed with. Ideally corporations would have no place in politics.

And please don't conflate "doesn't support lobbying for XXX" with "doesn't support XXX". They're really orthogonal concepts.