If it does become a long-term trusted store of value, BTC should trade around $2,000,000 a coin (depending on how many coins are lost and are actually in circulation). That is over 100x the price of where BTC is today.
Where do you get this figure from?
Bitcoin has the basic characteristics of a store of value, the main one being a limited supply. It will need to have some utility for it to be trusted as a store of value so it must succeed in some form as a currency.
Why does it need to have utility apart from its capacity to move wealth easily avoiding bank charges. If by utility it needs to be easy to buy a cup of coffee with it I disagree. Although it's egalitarian in nature, avoiding brokers, it isn't simple and it relies on faith. Faith that their money won't just go poof or that its value won't drop like a blimp with a hole where the naysayers are sucking out value making money betting against.