New Yorker article on microfinance and Yunnus

Here is the link.  The second half of the article is more interesting than the first; here is one short bit:

Omidyar and his colleagues say that the biggest obstacle to
commercialization of the sector is philanthropic capital. They say that
it distorts the market–not only by filling channels that might
otherwise draw commercial investors but also by keeping unsustainable
programs alive.