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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.
People who already have basic knowledge of Bitcoin and know how it works will buy Bitcoin more often than selling it in the near future because they are usually not so tempted by small profits in the short term and also have the nature to collect Bitcoin in large quantities as savings that they like. Although they can also sell it anytime they want, but for investors who are already quite rich and have a business that can provide money every day for them, of course the Bitcoin they buy can last a long time in their wallet without having to be taken out into the market again.