Stop and think about what you are saying. If everyone in the world stopped buying TVs and instead held onto their current TVs the demand for TVs would go to zero. What would the market price of TVs be when there is zero demand?
How do you think BTC miners pay for the graphics cards and electricity? NVIDIA doesn't take BTC as a form of payment. So money is constantly leaving the BTC network to pay for electricity and graphics cards. The only way that happens is if money is also coming into the BTC network
Every sale is also a purchase. The market price of something is precisely the equilibrium price at which inflows and outflow are matched. Think hard about this.
Holding isn't demand. Holding just reduces supply.
Miners need to sell BTC to cover their operating costs, so there's constant sell pressure. To maintain the same price, you need equivalent buy pressure. Hence the need for "a constant infusion of new investment".
Indeed. What may be missing from your model is that demand for BTC comes not just from people buying it, but from people holding it.
> BTC needs a constant infusion of new investment to keep the price up.
No it doesn't. Why do you say this? Where the market clears has essentially nothing to do with "new investment".