I was not aware that USDT was in the number 3 position in terms of market capitalization. This is a big surprise for me, how could stable coin reach number 3 in terms of market cap?
Look at the difference between the market cap of bitcoin and ethereum, there is a huge difference. Also look at the price value, the difference is huge. That's why ethereum can never topple bitcoin from the first position.
I guess that ripple may lose its position in that list very soon at the rate things are going downhill for the coin. Most of the funds I have invested are purely on these top coins because they give me a sense of security for my investments.
This is one useful statistic for anyone that wants to invest in cryptocurrency. Once a currency is highly capitalized, that shows that a lot of people are trading it and you can safely invest as well.