From your technique it's very hard for one to keep increasing his capital while loosing is not encouraging besides one may ran out of money, it only required gambler who's financially stable or has other sources of income to take such risk to increase their wager continually.
Gambling is risky for all who is a gamblers. If anyone who is stable cant continue for the long run. Cause in the long run gambler should be losers. Those who are stable may take more risk but the risk should not be any amount that cant be affordable if it goes into the loss. So, be careful before making any bet.