It would cost more than $10k for a pro sports photographer to switch camera brands

This presentation shows that in sports photography, 10 fps is not enough to capture a soccer kick, or a volleyball spike, You need burst shutter because your finger isn’t fast to react to the kick of a ball, yet odds are good that the shot you really want-- the moment of impact will still fall in between the frames.

https://graphics.stanford.edu/talks/sports-public-nov10-150dpi.pdf