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You are complicating the whole point you are trying to make, if I may ask how will someone that has a ground knowledge on what Bitcoin is all about and how it operates will invest what he can not afford to let go I mean that is really impossible because I haven't seen such case unless if the investor is a greedy investor that wants to make huge profit within a short period of time else someone with good knowledge of Bitcoin can not do that and they can not even sell unless they have been holding for years and maybe there portfolio is very handsome and if that is the case, them selling is not wrong because we can not keep storing forever without selling.
Storing Bitcoin that has been purchased for years without selling it forever is certainly possible for anyone who has such a will. And for example, we can look at the wallets of BlackRock, Microstrategy, and also Satoshi Nakamoto where they all continue to hold it without any target of when to sell it back into the market for the Bitcoin they still hold at the moment. This means that storing Bitcoin forever is not impossible to do because maybe the person holding Bitcoin does not really need the profit from Bitcoin and also loves Bitcoin too much so that the person might only focus on selling other things rather than thinking about selling Bitcoin.
Aside the fact that Investors take Bitcoin as an investment opportunity due the fact that it's appreciate in value overtime, it's also a store of value, which in the case why micro strategy invested in it in the first place, they are holding it as a store of value, than just for the profit aspect, but that doesn't mean that they are blind to the benefits attached to holding Bitcoin for a very long period of time.
Don't forget that micro strategy is a company, and they sees their holdings as the company property, so their is a higher probability that a new director or the largest share holder might decide to sell off the company's Bitcoin in the future regardless of the value of Bitcoin then, so when you are talk of holding forever, it doesn't sound logical because no body lives forever, so if it's pass on as an inheritance, your offsprings might not place the same importance to it the way you do, so holding forever as you are saying doesn't sound logical, because even generational house or land that is being passed from generation to generation is sold off at some point by an offspring that doesn't knows how valuable it is to his forefathers.