Starting Bitcoin investment with little capital will be very challenging mostly if that happens to be the major survival option of the investor. And in cases where the investor plans on using the proceed to solve their needs they might end up selling when the price have dropped just to settle the pressing need of that time.
Not only investment in Bitcoin, no investment with small capital is very profitable. and if anyone dreams of running his family on the profits of his small capital investment, he is still living in a fool's paradise. Because Bitcoin doesn't pump 2x-3x per week or month so if someone invests $200 it is not possible for him to make $200 profit per month. And nowadays it is not possible to run a family on less than $200 a month in any country. So if someone wants to run his family from the profits of bitcoin investment only then at least $5k must be invested. However, no one can guarantee a monthly profit because some months may result in losses due to dumping of Bitcoin prices.
As experienced investors are there measures that can be imbibed by new investors with little capital to help boast their capital. Some will want to mention patience which I will agree to but in situations where the money is needed to meet an emergency need how to you tackle such situations. Your formula might be a saving approach.
A small amount of capital cannot help anyone to meet urgent needs. Generally, if someone does future trading or invests in gambling and succeeds from there, then he can meet his target for a temporary period, but at some point he may suddenly lose all his capital. Because future trading and gambling are very risky