Why do we not end poverty? Why the inaction?
Because it's not my problem. I "act" every day to feed myself and my family. In fact, I "act" every day to feed others around me, sometimes including friends.
If I feel the desire, I sometimes even give a few dollars to bums on the streets, as long as they're not begging and have no signs demanding that I give them something.
Bottom line is, it's not my responsibility to live for any other man. I may choose to help whomever I wish, but beyond that, I bear no responsibility whatsoever.
The question may be why is there poverty? If it were, I'd respond:
Because international Nations irresponsibly come together and form organizations that take money from citizens immorally under the guise of "solving the problem of global poverty". Then they use that money to fund their meetings on "how they're going to fix the problem". A few of the more corrupt politicians take the money (such as Kofi Annan and his son) and embezzle it for their own ends, leaving the tax payers less able to generously donate according to their own desires.
If we had no coerced efforts in the first place, individuals may be more able to assist on their own. And if we had no international organizations wasting efforts, manpower, minds, and talent, some of these well-educated people could be running companies to employ the poverty-stricken individuals we're speaking about.
The true problem is people who feel, for whatever reason, some deep moral obligation to FORCE assistance on these "helpless" people in the first place.
Let them figure out their own problems. It's none of our business.