Economic freedom /property rights would be the main advantage. The government can't just confiscate the mining farm or Bitcoins as long as you follow the law. There are so many tax incentives that the effective tax rate can be as low as zero as long as you keep re-investing in more equipment.

Finally, there are big established power markets like ERCOT or PJM where you can buy lots of energy with lots of options for the contract structure. As an example, Riot Whinstone has a fixed ERCOT contract for 2.9¢/kWh. They have massively profited because now the energy price in Texas has doubled.

If you want to mine in the U.S., I recommend the Midwest since there are less mining farms there and they won't crack down on mining like 'Noo Yawk'. You might pay more for power but the weather is cooler than Georgia or Texas or Oklahoma.