The TON blockchain one of those chains I had high hopes on but unfortunately it turned out to be a failed chain. However, I think it will come back stronger but hopefully it's sooner rather than later. After coming across one multichain DEX, TRADOOR that was built on it, this made me realize some are still optimistic about the chain.
Also Telegram's integration into that ecosystem will continue to be one of the advantage it has, it's interesting that many users still interact on the blockchain basically because it's easier through telegram but how long will this ecosystem be on a downtrend before it gets long forgotten ?
Very hard to tell as altcoin market are based on the current hype. For sure you have heard about ICO in 2017 as the start of the craze in altcoin and then the subsequent IDO and others and recently we have the tap2earn which took off and then also died (it's also on TON blockchain).
Not saying that it might happen that the hype is going to be dead once this bull run is over. But as I have said, it's base on cycle, so maybe in the next one we will see a new upcoming trend and the last one being replaced.