Dealing with the Differences in Production

For my notes on the 20110319 Libertarian Party supported discussion meeting the following important question the libertarian movement should have a (preferably theoretically proven) answer for:

What to do with those people who (can only) produce less than they need to exist?

Or in Dutch (for my archive): wat te doen met die mensen die minder (kunnen) produceren dan ze nodig hebben om te bestaan?

My current analysis brings me to strongly believe the problem will be solved by the increase in voluntary donations¹ to (organizations, especially local, that support) those people; be it due to altruism or the fact that assisting them will increase the value of their own property and/or existence.

Is there an overview of the ways in which the various Libertarian original-theorists think about this issue?

¹ = there are only 4 ways to spent money (explained elsewhere); if someone else spends your money, you yourself are less involved & thus less committed (especially so if the money was forced from you). If you can spent your own money on someone else, the (probably more efficient) feedback loop is more likely to keep the process going.