Earlier quoted context omitted.
Why do you think that stock and crypto plugins will be very profitable? There are no tools to combine finance data in easy way?
During my 20 minutes I noticed stocks and crypto seem to always fluctuate within a given range. So if you buy in the low end of the range you're guaranteed to see an opportunity to sell at the higher end of the range. Crypto is just stocks with a wider range and more volatility.
... except for sometimes, when they don't.