...And that means if we invest $10k, it will only be $12.9k next year, not immediately becoming sultan...
There is no guarantee that after investing 10000 dollars, you will receive 12900 in a year. There is nothing guaranteed in investing at all, and even more so in cryptocurrency. And if you do not have enough experience to invest, then such an investment outcome as the loss of a deposit will look more real.
Investment has its own risks, and that risk includes whatever you deposit today will never give you returns tomorrow. It’s actually more of a loss than a gain especially if you come to invest in the market without understanding what you are investing for and how you will work for it. If you don’t have the knowledge and experience the moment you invest, then it’s useless to expect for profits after you invest. So never underestimate investing, it requires a lot of knowledge and skills first before you will succeed on it.