You will see consistent correlation.
Wait a month or two (because you need to have good enough performance from one platform before testing new networks because it’s always an investment to start a new network and therefore a new learning period) and then launch a Facebook remarketing campaign.
Sometimes the ROAS will plateau...
Avoid sending hot leads to competitors and gain extra data for optimization opportunities.
If you have a brick and mortar business and you’re running a special offer or a promotion, you can use Google Ads to drive traffic to your local store.