I believe that it is not beyond anyone to see why MD/DO school would be more appealing than podiatry at first glance: a possibility of specialization, and of course the 'prestige' aspect. Given this, it is wrong to assume that every student applies to these schools for the wrong reasons. The route to help individuals is never a wrong road to take, and the majority of individuals who are in it for the money would be very disappointed with respect to the educational rigor involved. Honestly, if students have a choice, they would overwhelmingly pick the traditional route, because it is hard to determine what you want to do that early in your life. You can turn the tables and say that many podiatry students are in their positions solely because they could not get into medical school. As a podiatry hopeful, I am fully aware of this.
About the MCAT, perhaps there could have been a specialized test of some sort (but both the OAT and the DAT contain 99% of similar information to the MCAT anyway, there isn't much emphasis on the career itself, as incoming students won't have any knowledge of such), but given the reason in parenthesis, it doesn't make sense. The MCAT is a rigorous test by ambiguous terms, and leads to a medical field. Podiatry in itself is the closest you can get to a traditional medical sub-specialty, with surgical privileges and full autonomy, so why would a new test need to be written? We must remember that these entrance tests were written for reasons I stated earlier: To test for competency, intellect, and prior basic education. I agree that podiatry is an important field of medicine, but frankly, entrance tests to any health professions schools will be a fading light once the real education begins.