“Far from it being the case that websites have become obsolete, they are the firmest bedrock for maintaining free local SERP visibility amidst an increasing scarcity of opportunities.”— Why Local Businesses Will Need Websites More than Ever in 2019 (Moz)
Small businesses need websites. The website is a single “source of truth” that they control. Everything else they do online — Facebook, Instagram, Google My Business — should point back to it.
I’m biased of course — I work at GoDaddy, we sell a website builder, and we sell WordPress hosting — but I was an advocate of getting local businesses online long before I joined GoDaddy. It’s why got into web development as a career.