After reaching the accumulation limit of more than say 10 years of doing it and bitcoin is already in the range of $500K, it will sell bitcoin partly for sale because the goal has been fulfilled from the initial investment plan.
So I will not continue to hold for as long as possible, there is a time to sell but now is still not the time because it is still planting and until the harvest arrives after 10 years.
It's not like accumulation limit, it is more like your own defined accumulation cap that can be changed if you want to continue. Limit is something you are not able to break out by lacking of available investment capital for example. Cap is defined by yourself and might not be restricted financially so it's easily for you to change your investment cap.
When your investment portfolio is big enough and already runs very well with profit, you can withdraw part of your profit. It's good and together with how you manage your finance and investment capital, your financial status would be good enough even you don't withdraw your profit. As a good investment management is not using all money you have for investment, so let's imagine if you apply it well, when your investment capital is big enough, your finance beyond that investment portfolio would be good and healthy too.