A person does not need a large source of income to invest. A person can start investing only if they have a reasonable income. Because it is very important to keep your investment consistent because if your investment is not consistent then you can fall far behind the goal of building your portfolio.
You may not require to have a large source of income to start investing but it's necessary and a plus if you can have such a large sources of income as an investor in bitcoin or any asset. It will help you to invest comfortably build a much bigger portfolio without having to withdraw your bitcoin investment prematurely due to extra responsibilities that your small income can't carry. Because it's not sufficient to make room for emergency funds without having to short live your investment due to emergency.
The amount of your investment will depend on your income, for example, if you are earning a good amount of money at the end of the month, then you will have the courage to invest a relatively large amount of money consistently, but those who earn relatively little money will have to invest the amount of money that is left after calculating everything. Who invested what amount of money in Bitcoin, these things are actually not a big fact, it is the efforts of the investors and how much they are trying to invest from their respective positions. If a low-income person invests 20 to 30 dollars every month and if he continues to invest this investment seriously for a few more years, then at the end of a certain period of time, his investment amount will be a lot. Thinking like this, everyone will probably think positively about investing in Bitcoin.