What is the possible maximum amount BTC could reach in the future?
Some predict 10,000$ in 36 months, but is this the 'final' ceiling?
What could be the maximum targeted price?
I don't know about the in 36 months part but the $10,000 price is one of the oldest predictions and although I don't like it from time to time but it can actually happen.
if you think about the basic supply and demand of bitcoin.
there are 7.4 billion people on earth as of 2016
and there is only 21 million bitcoins.
even if a very small portion of that population starts investing in bitcoin, we can see $10,000 and even more pretty easily. but this process will take time. that is why I am a bit unsure about the 36 months part.