I've built up a pretty nice amount of Bitcoin over time and I have never spent any of it.
How is that possible? If you run a store, don't you have expenses and obligations towards the state and your employees (salaries and taxes)? Do many people come to your store and pay with bitcoin and do you just not declare that as income?
I think not all sales are paid in Bitcoin and most probably only a certain percent of the total sales is paid in Bitcoin and the profit that were paid in cash can cover the one that is paid in Bitcoin so it is really possible that he can just keep the BTC and recycle the profit from the cash purchases.
Okay, if you're planning to hodl till you die, what's the point?
I think that is just an expression that he is willing to hodl Bitcoin for decades. Besides if @OP earns enough from his Business then it is possible that he can hodl BTC and pass it to his favorite kids or grandchildren. People who have enough can keep any investment untouched until the day he needs fund badly.