Crypto wouldn't be as popular if exchanges like Binance, Kucoin, Coinbase wasn't here. Decentralized exchanges are cool but we already have seen that the tech isn't advanced enough to replace the human factor. There are still some problems which only a human can solve. Decentralized systems are not perfect, they can get broken in time. Customers are not perfect neither. That's why centralized exchanges attract more customers. People just want to know somebody behind their screen there is a human ready to listen to their problems.
You do have a point there, mate. Centralized exchanges are the ones who drive the most adoption into crypto/Blockchain tech. They're the first thing people come into when starting their journey in crypto land. Without them, I fail to see how crypto will be massively adopted by (almost) everyone worldwide. Decentralized exchanges will still be around, but their limitations will simply drive people away from crypto.
There is a hybrid exchange called "Waves Exchange" with high-performance order matching/execution, but I'm not sure if it will handle millions of TPS when it reaches widespread adoption worldwide. I'm fine with governments "regulating" crypto/Blockchain tech as long as they don't ban it altogether. Who knows what the future holds for the entire crypto/Blockchain industry? Just my opinion