Agree. Institutional investors would make a big hit towards Bitcoin's growth in price and mainstream adoption. The acceptance of a Bitcoin ETF from the SEC would contribute towards its price in the long term, since serious investors would get easy access to the world of cryptocurrencies. For Bitcoin to reach a Trillion-Dollar market cap and beyond, there needs to be a lot of demand from people in the mainstream world.

At its current state, people are mostly selling Bitcoin due to FUD from mainstream media, and the reaction of governments against cryptocurrencies. However, once Bitcoin starts becoming recognized as a legitimate cryptocurrency in all countries of the world, it'll rise no matter what. Behind the scenes, Bitcoin is being actively developed to solve the scalability dilemma for the greater good. Once people realize that Bitcoin is scalable, then demand would rise as fees and transaction speeds are kept to a minimum. This is the key towards mainstream adoption, which is why many are anticipating the stable launch of the Lightning Network, to use Bitcoin more thoroughly.

In the end, Bitcoin will reach more than a Trillion-Dollar market cap. However, it's only a matter of time before this happens, causing many early adopters to become wealthy. Just my opinion