It’s mathematically impossible for everyone on earth to own one whole Bitcoin. There is not enough to go around.

There are close to 8 billion people, there will only ever be 21 million bitcoin.

If you can’t get to 1 Bitcoin now, that doesn’t mean you should give up. Start with 0.01 or less, then get to 0.1, and keep going. Buy what you can afford, because whatever you buy will get you further ahead than having no bitcoin.

You are so early. If you start today, you will achieve more. Delay for several years, and you will receive less.