Poor people in the real sense of that word can't even avoid to feed themselves let alone investing in Bitcoin. If someone lives below a dollar per day, how can they afford to save up to do any meaningful investment. It's almost an uphill task. I believe what is implied in your "poor people" is broke people or average earners.

Back to your question, I think the way Bitcoin has financially enabled so many is that it opened up a lot of trading and investment opportunities around it and many of us here (if not all) are beneficiaries of this.