I believe that in case of worldwide mass adoption, the price of 1 EOS could even go twice your maximum prediction and even much more. Let's not forget that only 0.5% of the internet users are using blockchain technology. Imagine that in 10 years, a third of all the internet users start using dapps inside EOS... Imagine that even non-internet users could use EOS without knowing it (a bus ticket at a bus station delivered through a dapps turning with EOS...) We could potentially have a very good surprise on a medium-long term period with EOS's price.
The EOS revolution is spreading around the world! Even devs who had chosen ETH to develop Dapps start having some regrets and start migrating to EOS. Last example in date is UNICO.
The future is BRIGHT for EOS! Only quantum computing could do better.