I don't think it will happen ever ever never.
But if someone has access to Foundry pool back end it is possible.
Foundry mines 25% of all blocks. So 144 x 6.25 x .25 = 225 coins
I do not have enough hash to use foundry as you need 20ph in hash.
I do not know how often they pay coins.
But the earn 225 coins a day. So if they pay daily 225 coins = about 7 million.
The pool would need to pay 225 btc all miners then pay 225 btc to a new hidden btc address
and have the above cases play out.
Its only 7 million dollars and unless it was done back door and full remote the person would likely be caught.
I think that we won't see this happening as it would be easier to simply take the coins since you have wallet access anyway.