There are still many business owners out there that don't have time to build their own website with squarespace or wix or maintain it.
Sell them on you building and maintain their website while they do what they do best, run their business. You can handle the design, setup, adding content, updating content adding new content, handling updates and monitoring uptime.
Expand to offer custom web applications (rails/laravel) most businesses can use something custom for their business/data, a simple stripe ecomm setup, surveys, CRM, allow customers to customize and/or price services/products, email/sms alerts for customers, appointment reminders, there are lots of things you could do with businesses and custom web apps.
Talk to them about their business, what are their pain points, how can you solve them with technology, website, forms, web app. Three is still lots of opportunity out there.