51% of MKR holders versus 51% of miners is a different threat model, but "ability to make MKR" and "ability to own mining kit" both seem to depend on financial

51% of MKR holders versus 51% of miners is a different threat model, but "ability to make MKR" and "ability to own mining kit" both seem to depend on financial expenditure, so I wonder if the difference in practice will be that big?