Can you make money with nodes?

Can you elaborate on the potential profitability of operating nodes in the cryptocurrency ecosystem? Are there specific cryptocurrencies or blockchain networks where running a node can generate significant income? What are the key factors that influence the earning potential of a node operator? Do operators need to possess specific technical skills or hardware requirements to ensure profitability? Furthermore, what are the risks involved in operating a node and how can these be mitigated? Understanding these aspects would help investors and enthusiasts make informed decisions about whether to pursue node operations as a means of earning in the crypto space.