This happens to cross over to growth marketing. Growth hackers are arbitrageurs. Growth marketers are value investors.
Explanation and examples below 👇.
Value investors find longer-term, profitable investments with a safely low price.
Growth marketers write the best content in a growing/large niche that converts well. They also craft referral programs that naturally hook new users into a great product.
This went away when too many apps did it. Users got spammed.
Small business owners streamed to their personal networks, pinging friends of friends. But this got spammy quickly. Notifications went away.
LinkedIn ads are a great example here: now, they only work for businesses that can afford to pay tens of thousands for a customer.
It's not arbitrage because new people always become aware of you (if you clearly distinguish yourself from competition).
Supply is stable and there is high demand for you.
Why? It's not the same people searching over time. So supply is always refreshing.
New parents on Instagram are a renewable audience; new people become parents every month. So supply is always refreshing.