As with every moderately sized app, there is bound to be a number of things that Pitch has its own spin on. Different enough for you to matter? Maybe not. Different enough for someone else to matter? Probably yes.
Other products are usually spin out into their own companies and/or under Alphabet rather than Google.
After seeing them close down a couple of services I never thought they would close down, I don't think anything "free" is off-limit right now. Especially depending on how the US/world economy goes.