If you rely on advertising you should not be outsourcing it to google anyway. You should have more control over that part of your business which means it needs to be at least partially in house. Even if you do take some google ads, make sure you have other partners and make sure that ads meet your standards (not a scam, not for your competitors).
You don't rely on Google to handle everything, it's self-service. Whether you use Google or another platform depends entirely on where your audience is. For example, my father runs a small construction company, and 90% of his leads come from Google search. That’s where people are looking for services like his.
