Only by being patient for a long time, a low-income person can invest in Bitcoin. If you only use strategy and intelligence to hold on to Bitcoin investment for a long time, then your investment will definitely be successful. Some low-income people are succeeding by investing in Bitcoin, but some rich people are reluctant to invest in Bitcoin, mainly because they do not have the patience.
It takes faith and intelligence to invest in Bitcoin, then you can definitely get the most success, and if you can live a more refined life, then by adding another five dollars to your Bitcoin investment, you can create a larger fund at the end of the year.
First and foremost, we should understand that generally Bitcoin requires patience just as you said but this should not be limited to only low income earners but for all Bitcoin investors although I understand why you said low income earners, as bitcoiners we have to endure many things before we can actualize our set goal, although buying is another thing, hodling is also a different thing, with what I know I think this hodling aspect of Bitcoin is what makes us real bitcoiners because you must understand the benefit of holding before you can actually persevere to make sure you hodl for a long-term.
You're right, some rich people lack the endurance to hodl Bitcoin for a long-term but I must say that this kind of rich people are those ones that are not smart enough to take advantage of a good investment that has the capacity to boast there wealth in the future if properly done.
In conclusion, the major thing that can make you a successful bitcoiner irrespective of your financial status is by being consistent with your investment steadily and hodl for a long-term, with what I know everyone can actually make progress in Bitcoin accumulation but what matters is individual mindset and determination to make their dream a success.