Investment does not favor the rich nor the poor, but it’s giving equal opportunities for both. The only difference is that, you can maximize your investment if you are rich and have multiple sources of income, while the poor still invest but only in a small amount, and that amount may possibly come from debt or money borrowed from a friend or relative.
However, in the long run, having multiple investments won’t make you real rich if you aren’t capable of managing them well. It’s easy to invest one at a time, start with a small amount and challenge yourself to make it grow and progress through your knowledge, skills and perseverance on your investment.