you can start by investing $200,$300,$500 everyday for 2 or 3 years, and you'll be a millionaire,
Now the question is how can someone make $200 per day excluding food cost, rent cost, medical bills, utility bills, entertain funds, emergency funds etc?
Not every people in this world born from rich parents, most of them are sandwich generation or get paid for minimum wages.
bitcoin does not offer a get rich quick scheme within a certain timeframe guarantee
I don't think that doubling your money for few years by investing in bitcoin is get rich quick scheme, it's technically possible even when Bitcoin price already reach $60K (which people said now it's expensive). It's no longer make sense when people are hoping to 100x or 1000x by investing in Bitcoin like when Bitcoin price was under $1K.