A very biased view point. There are small business on social media that make over $10k a month organically. Also there are a lot of other factors to look at i.e product market fit, the branding and general execution.

Example: In terms of sales and revenue you can't compare an instagram cat theme page and a weightloss theme page.

Bad Advice: One of the worst things a small business can do is go the paid ads route.

This article goes deep into this: https://medium.com/@clementbrian.work/how-much-should-you-spend-on-advertising-ultimate-guide-17e118028792