Cryptocurrencies in general are extremely unpredictable, tokens of crypto startups are even more unpredictable, because sometimes it is difficult to understand how useful the startup technology will be in the future and how it will develop. Personally, I think LPoS mining is very promising.
The success of any startup is unpredictable. Whether it is a crypto startup or not.
But existing cryptocurrencies are predictable: the majority will die;
BTC and
ethereum will grow.
I would not be so sure. There are many promising alcoins that can show themselves in the year 2019-2020.