Is Usage an Anachronism?

Last night, Greg and I were discussing the future of usage rights, after I read his latest blog post about PDN’s article on what ad agencies are looking for these days (unlimited usage, low prices – i.e. the RF model for commission shoots). Then this afternoon I read Rob’s interview with Mariano Pastor about his new pricing model, which is based on the time it takes him to make the image, not its end use.