If you are just aggregating data, that's not a moat.
A lot of folks are buying data from a bunch of sources to give complete coverage - e.g. a dataset of all plane ticket prices, where before you could only get separate datasets from each of amadeus and rivals.
Someone, usually someone big, just goes round you to build their own infrastructure for some internal function, e.g. Google flights api, and then realises they can replace you as a secondary revenue stream.
Instead, I think you gotta somehow add value to your data, which is best done as a side effect of another buisness.
Reuters have a huge news dataset with amazing annotation because they got thier editors to curate it as it was produced. That's an unassailable free text training set that no one else is gonna match.
So build a dating app that causes users to create a curated dataset. Or a game. Or a buisness tool. Or an api. Or a really good AI secret sauce built in an expensive privately curated training set that ate most of your funds.