[joosters]

One angle that isn't mentioned in the article is that there are companies that now stream live GNSS/GPS data from horse races, so the drone users are competing against 'official' feeds of in-running data, e.g. https://www.totalperformancedata.com/

This is a clever move from the racetracks: they can sell this data, there are customers for it, and it saves them from fruitlessly trying to stop the drones.

However, the data is expensive, and if you are buying it then you are going to be competing against the other buyers of it, who will be trying to place the same bets as you, so the edge isn't going to be too great. Kind of like HFT, where everyone races to keep up with the technology spending of their competitors.