The problem with super shoes/spikes is not unfair competition. Every company can have the same opps, and the runners can make choices. It is a free market. Just as it is in tennis, golf, etc.
The problem is that the shoes make performances of the past irrelevant. The only sport that is like running with regards to the pure numbers being important is baseball. Drugs and tiny stadiums ruined baseballs numbers and history. The same thing is happening in track and field. People place great importance not just on competition, but comparing the current athletes to historic performances.
At the end of the day, it is not important that newer golf clubs and balls make longer drives; or that better racquets make faster serves. etc. etc.
Sadly, it is becoming more and more that way in baseball and running, as well. But I still love it, and it is something we have been dealing with for a very long time. (tracks, spikes, epo, etc.)