Multiple nodes on same plots?

Lets say you have 10 plots and copy these to 3 diffferent main nodes. What will chia network do? Allow this and first responder wins?

If so whats the implication if the 3 nodes have same keys or diff keys? Is this bad practice?

Thanks

Not an expert but I believe the plots have the users public key as part of the plot (maybe signed with it?). My guess is if deployed to multiple nodes, it would simply look like repeat traffic. The same user claiming the block repeatedly. An entry would be entered into the blockchain and the others tossed as duplicates.