For a service like this. Domains mean nothing. If they spent more than the price of a .com domain it's a mistake.
For consumer facing product, they find you one of two ways.
1. Social (Paid ads) 2. Google search (Paid ads)
I am not talking about viral products or brands, I am talking about the average service (like this one).
I saw many companies do this mistake, some paid 10K some paid 2m<, all made a mistake IMHO.