The truth is trading need plenty of money, if you use small money then expect to have little return and you will need the virtue of Patience to ensure that money grows from the little it is to a bigger amount. But if you want to make real profit then use a bigger amount and you will be satisfied with your returns. Furthermore, people who use smaller money blow their accounts faster than those with big money. People who have big money to trade can short in their capital, but they will always grow it back and move forward.
When we talk of investment, it doesn't look like we have to have huge amount before we can invest because what you are discussing is actually true but only for people that have money. In the process of making wealth what I normally consider is Patience because that is what we should have to get there, Is not that I'm going against or arguing with what you said but to me it seems discouraging to the people that are having interest and don't have money. It is clear that everything in this world start from the scratch because if you ask some of the wealthiest people on earth now they will let you know that they started from the scratch which they never thought of being what they are now but since they started gradually they achieved more.
This have stopped so many people from getting involved in cryptocurrency because they believe is only for rich people which was not, I encourage so many people to buy as little as $10 consecutively and also let them know that it's not going to held in a short time but a long period like 5-10 years.
If we are just that starting up and still having no idea on what you are doing then it would be that understandable that you should be that only spending some small amounts specially when you are just that on testing phase. Trading isnt something that you can make money directly because this isnt a skill that you can learn in a short period of time and if you are that believing that you can master it out overnight then you are just that becoming delusional. You would be able to realize at the time that you are losing soo much money just because you've been that anticipating or hoping that you can be able to learn that skill in a short time and since you do have that kind of big capital then you do become that confident with it and you've been that forgetting that risks management at the moment that you do made out some trades on which this is the most important thing of all.