Will we ever be able to send transactions without a middle man?

I’m relatively new to the space, but after looking at some popular wallets like meta mask it seems they all use big platforms like infura or alchemy to actually interact with ethereum (they strive to be the “AWS of web3” which is such a counter productive analogy). The Achilles heel of all these nice wallets is this centralized backend they seemingly rely on. Will we ever be able to send transactions directly to ethereum without these middle parties via a mobile or web based Dapp? The ethereum site mentions things like phones being able to run their own nodes post sharding, would this be compact enough to do that? It would be so great if we could get to that kind of level, like a completely client side wallet that interacts with ethereum directly