Why dont we test it out. On that site I input this info...
profit target: 1000000
max spins: 1000000
20x fake progression: 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20
wait for 15 losses in a row before betting.
So we have 1 million spins max with a 20 spot progression plus 15 losses = possibility of losing up 35 in a row. It took a few minutes to render the data but the highest it hit was 26 dozen losses in a row, with only one other time hitting over 20. You would have to do 2,800 spins a day per year which is ridiculous. Lets do something more manageable like 300 spins a day. Thats over 9 years worth of gambling data right there and only went to the 26th loss.
THE BOTTOM LINE: You can easily create a profitable system if you study the data.