Bitcoin 21M limit

I have a thought and hope for answers: If the total amount of Bitcoin is limited to 21,000,000 coins and many times you get articles about „Old harddrive missing - Would be worth 750,000,000 now with Bitcoins on it“… If there are really a lot of Bitcoins around the world locked on old thrown away devices, how does it affect the Price and ecosystem of BTC? From what I understand it would lower the total amount that is available to the market? Cheers from germany!

Edit: Thank you guys!