Validators are required to operate nodes — computers connected to the blockchain network. These nodes maintain a replica of the entire blockchain and get involved in the consensus system. Everyone over the network with any degree of coins could become a Delegator. Commonly there won't be any minimal requirements. https://financefeeds.com/bitcoin-price-prediction-megaphone-pattern-shows-270000-is-possible-while-this-altcoin-prepares-to-skyrocket-41x-2/