People often buy domains and then do not use them, but they retain ownership as an investment. The name usually will then be “parked” and display default info from the registrar.
Look for “whois” contact info for the current owner here: https://lookup.icann.org/en
Also look for the expiration date. Domains “drop” from registration a month or two after the expiration date if the owner does not renew. The registrar https://lookup.icann.org/en can also auction the name instead of just letting it drop. If the name is somewhat valuable, it will probably be snatched up by an investor a few seconds after it drops. There are domain drop snatch services you can hire that will do this for you.
If you really want the name, you will likely have to pay ransom to someone. Your best bet is finding the current owner to negotiate with.
Go Daddy is not the only ISP. They are associated with soft-porn. In a 2008 superbowl ad, they featured certain slang for a part of a woman's anatomy.
