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Ethereum is an improvement over all of them, many smart contracts are using them, even if examined closely, projects that have a greater success value are using their smart contract network, and the prospect of Ethereum using PoS will have a huge impact going forward, as they are figuring out how to use Ethereum must master any exchange, be it transactions, swapping or buying/selling in their smart contracts
Projects that have a real market value sustain no matter what will be changed in their system. Like, Ethereum has gained huge support before this change and sees no huge impact on its trend because investors and traders had seen no big difference from it. That is why we don't need to worry about this, instead of looking for more benefits we get and giving convenience to the users. This kind of system innovation, well, I guess this even help for a sustainable market demand somewhat in the future.