I am looking at an exit plan for when bitcoin skyrockets to $100k-$150k. I believe it will happen next year probably. By that time, most of my investment in bitcoin and altcoins well fetched me many profits. I will be looking at selling some 80% of my bitcoin holdings and all of my altcoins holdings. Failure to do so and bitcoin begin to decrease will cause me to lose a huge amount of profits I would have gained when bitcoin was at a high price.
The price of bitcoin will touch $199K next year, many people predict this. I also agree with you, if the price of bitcoin reaches more than $100K, we sell 80% and leave the rest to sell at the highest point, maybe $150K, so that we don't regret that we sold bitcoin too low if there will be a highest point.
Without a doubt, the majority have a plan, and it is in some ways the right thing to do, but I think that a large majority does not think that way, they simply hodl their bitcoins, and when they need it, well exchange, it is that simple for many, others will even leave their bitcoins for decades even as a legacy for others to decide.
People who have large capital to buy bitcoin will do something simple, just buy and hold long term. It might even be passed on to their descendants as you said.