here are my two cents worth
here are my two cents worth on the subject...
1. Money. Shoe deals are a big part of a pro runners income. They also cover training and living costs, which is a huge investment. Take a shoe deal away from an elite runner and his/her endorsement options are rather limited.
2. Transitioning. Now that your no longer on Team Nike, you have to rely on purse/appearence money. But, before you can attend any races, you've got to take a year, (or more if you have poor form...and alot of elite runners have horrible form) to learn a new way to run. Now your back to living in your parents basement and working a day job to pay for your running shorts just like the rest of us.
3. Training. Two factors limit my training. The first is time. Elite runners don't have this issue, as running is their job. The second is the condition of my feet. I hate taking days off from running in the summer. When I ran shod, I would run 7 to 10 days, many times twice a day, without taking a day off. Now, after 3 days of long runs, my feet are bruised, stiff, and just plain tired, so I'll take a rest day and then all will be good. It's so tempting on those days to grab my trusty Zooms, lace them up, and head out the door with total disrecuard for the sharp pebbles, pointy sticks and stray dog poop that my litter my path. Lets face it, running BF or minimalist is much harder than running shod. It requires more focus. At the pro leve, that focus must be put towards race strategy, scouting the competition, peaking at the right time, and a million other things that us recreational runners don't have to deal with.
Unless all pro runners were to switch to BF, then those that run bare would be at a disadvantage to those that run shod.