Will anyone ever use Cardano, ETH, SOL, AVAX, etc for real applications?

Blockchain is a great technology.

Land ownership, patents, academic certificates, research papers, supply chain data, financial transactions, movies/ video copyright, etc can all go into Blockchain, and it is going to be a game changer!!

However my question is : 1. Will banks and financial institutions ever use public Blockchain, instead of creating their own Blockchain? When JP Morgan is coming up with their own Onyx platform, it got me thinking "Which bank will ever use these public Blockchains?"

1. Singapore had many Blockchain pioneers but when Government of Singapore had to implement one, they created OpenCerts . Will any government ever use public Blockchains?

2. Real valuation: Last year, There was a time when Polygon was making 600$ a day in fees. It got me thinking why is Polygon valued at billions when it isn't providing a service/value worth 600$.

3. Unhealthy growth equation: Esp In a bull market, The whale pumps the price 2X 3X. When rewards are 3X, Everyone wants to stake. esp In Proof of Stake, More you stake more rewards you get. To stake more, you buy more. When you buy more, The price goes up. When price goes up, Everyone wants to stake and get token as a reward. Until this bubble crashes...

4. Eventually crypto technology is defamed: I came across Traders Joe Application in AVAX, and the rewards for liquidity pair staking was like 20-300%.

When someone gets 20% USD interest by staking AVAX, They will certainly buy AVAX and stake. When they buy AVAX, the price goes up. When price goes up, they get more interest, and so on. This eventually becomes an exponential function.

I remember the same incident with Raydium application in Solana in 2021.

Until something unexpected happens and it crashes like Celsius, or Terra Luna.

Lets discuss:

1. Where do you think the SOL, AVAX, ADA, ETH, etc are heading in terms of sustainable real world utility (not swap, meme, farming applications)?

2. Any examples where government or private companies are using public Blockchain, and sustainably paying gas fees?

3. Are there any token that are growing sustainably, by preventing unhealthy exponential growth, and crashes that eventually defames the Blockchain technology?

4. Anything we can do to prevent defamation of crypto technology?

I hold BTC, ETH, ADA, and several other tokens.