Even in here crypto you don't notice that always but you do work together with large number of people. You work together with people from all around the world even If you don't know that you work together with them. So the money is amount of people you reach the trading investing so you work together with many people.
We need people to succeed, we can't do things as a one man show or we won't go far with our business. You need people to buy into your Idea and investing with you. When people with different goals but of the same similar ideology come together, they can help each other to achieve their goals. Your networth is a direct result of your network. If your network circle is small or not filled with people of value, your networth won't be what you always desired since you're working with those of mid mentality. Always strive to expand your network so you can get your business out there and seat back to watch how you succeed.
That's why it's not good to say i do it all alone because nobody cant really do it alone we need others either we admit that or not.
The world is a small place, some call it a global village, with the help of internet and technology, you can get your business out there so why do you want to do it alone. It's more stressful and might cost you more running everything yourself. There are other persons/business that you can partner with and you'll get a better value of your money and time that you put into your business. Partnership is the way to go and not sole business especially when your business needs more people to know about it for you to make profits.