The five years time is to short and I just think we will be able to reach the 100k price in just 5 years, look at what we are now, it's been 10 years that bitcoin existed but we hardly even step on the $20,000 mark, i'm not trying to be as negative as it can be but even if we consider all the factors affecting the price $100k is just too far to reach, I would go with $50k perhaps but $100k, I doubt it.
What you say is true that bitcoin existed for 10 years now but we have not reached $20,000 yet but bitcoin is way popular that it is before which means that a lot is becoming interested in bitcoin unlike when it first started. Also, the supply is almost to it's limit, only a few hundred thousands left to mine and if all coins will be mined then the supply will be scarce and once supply is scare the price tend to go higher so the $100k price in 5 years is possible. The most important lesson I learned from investing in bitcoin is that, nothing is impossible with bitcoin.