The lines where pretty blurred already. If you search for the exact name of an app, I think that needs to go first in the results, the ads can be the third or forth. Having ads show up before the "correct" app is incredibly dangerous in a world where so much of our digital life is in various apps. Often the people see is actively trying to trick people into installing the wrong thing, making the ad less visible is going to get a lot of people scammed.
How the hell Apple does not see this is beyond me. All of their fancy security in iOS is worthless if they allow people to be tricked into installing scam-ware.