1 trillion was really such a great amount to have and is quite impossible to be met within this year of 2018. Because even if  Bitcoin was fast rising, it will be still hard to raise such a great amount and it will be too expensive to be affordable by small time users that wanted to buy their own Bitcoin to obtain larger amount of income since it will be more beneficial having a large quantity of Bitcoin in your account. But maybe , we are just underestimating Bitcoin's capability to grow but if that so happens that Bitcoin will reach such amount, then it will be beneficial.