Wire transfers are not the same as ACH transfers. I regular transfer money between Chase, Ally, Capital One 360 and Fidelity and have never been charged a fee because I never do wire transfers. (The default for all these banks is ACH; you must explicitly choose wire transfers.)

EDIT: to answer the modified question. https://www.depositaccounts.com/blog/difference-between-wire-transfer-and-ach.html "One of the fastest ways to send money is via wire transfer. Although a wire transfer can take days, in most cases a wire transfer takes place within minutes. It is a direct bank-to-bank transaction that allows you to move money from your account directly into the account of someone else."

"While it may seem similar to a wire transfer, a transaction accomplished with the help of an automated clearing house (ACH) is not the same thing. ... When you arrange for the electronic transfer of funds, all of the information is included in a batch, which is then sent to the clearing house. All of the transactions in the batch are then handled by the clearing house, rather than as a direct bank-to-bank transaction. ... As a result, your money is not available as quickly as it often is with a wire transfer. The ACH process can be more convenient and is less expensive, but it also takes a little bit longer."