The reinvestment allowed me to hash today 21x faster than 1 year ago and to earn ~1/3 of my initial investment this month.
And in that year the difficulty has increased by > 300x and the price of bitcoin is less than it was 9 months ago.
This is one business where what you did yesterday is far more important to the outcome that what you do tomorrow.
The 'Reinvest At Any Cost' strategy looses to the long tail of diminishing returns and languishing bitcoin prices.