I completely agree with you, you never need a huge amount of capital before starting Bitcoin investment, you just need to create a permanent source of income and buy Bitcoin continuously with a discretionary income from it, you must arrange for discretionary income, if you buy Bitcoin regularly through the DCA strategy with this part of your income, it will gradually accumulate at an average price and will continue to grow permanently, it is much more risky if you think about aggressive investment and short-term profits, in comparison, buying Bitcoin continuously through DCA has a much higher chance of profit, and it also provides the investor with maximum benefits, such as you can buy Bitcoin completely free from volatility. Stability of investment is very important, because it is a long-term investment that brings high chances of success in the long run.
To be honest,I have never heard of a permanent source of income, even though you probably may have an established business that fetches you income regularly,it wouldn't be permanent because gradually you are eventually growing old and someone will inherit that business from you when your bones are Weak & feeble. So I think they is no permanent source of income anywhere,what you should be emphasising on is having a temporal source of income that will enhance your acceleration in your bitcoin accumulation continuous.
If you have secure a regular flow of discretional income and By using DCA strategy,you can be persistently and consistently buying Bitcoin regardless of the price for the long term.