It's unfortunate that you put 1 BTC in an ICO and it never pumped, but it's not uncommon in the world of cryptocurrency. Just like Tezos, many ICOs don't go as planned and can lead to significant losses. It's especially painful when you see the coin you invested in suddenly pump after you sold off your position. That being said, it's important to remember that investing in crypto is a high-risk endeavor and there is no guarantee that any coin or token will increase in value. It's important to do your research and be aware of the risks before investing in any ICO.