The future is unpredictable but as bitcoin investors we have the right to be optimistic and believe that one day bitcoin will get there. But to be fair it's not as easy as you say because bitcoin's market cap has become quite large and to grow 8x requires a lot of money. With bitcoin's current capitalization, we need more than 15 trillion for bitcoin's capitalization to reach 17 trillion. This is not a small amount of money and can be achieved through investment from retail investors or investment funds around the world.
It took gold thousands of years to reach that level of capitalization, and investors in gold are not only funds, organizations, companies...but also governments. So I think for bitcoin to get to that level there needs to be government involvement, otherwise I don't think it can easily reach a $17 trillion market cap.