I had the exact same fear when I started out. You might think a 0% fee means lower quality hardware, but that is definitely not always the case in this ecosystem. I did a deep dive and found Vladika https://vladika.love/ , and they completely changed my mind about how this works. Even though they are a 0% commission Solana staking validator, they use professional enterprise-level hardware and have a spotless reputation. They are even marked as "honest" by the Foundation and on sites like PineStake, which is huge for my peace of mind. I’ve compared them to some of the big names with high fees and my returns have actually been better here. You get the high-end security without having to pay a middleman!