Well, it is normal these days. It is similar to: you say something unique to someone and he goes around saying the same thing. You cant stop it right? The best way to tackle is have a strong marketing strategy. Be there before they do.
If you find someone doing so, hit them harder with your marketing campaigns, brag about it so they stop copying you. But at the end, you dont have to bother yourself with it a lot. Just keep promoting your business.
Also file a dmca content to google they will take care of it
Google knows if someone copies your content. You don't have to care about it.
the best way is to use DMCA, on your site. If you find anyone copying just send him an email first, else you can file DMCA and content will be taken down, first from google and then on-site.
Another way is to add copy protection by disabling right-click
disabling RSS feed
but if you keep ranking the content, means optimizing and updating, then no issue of copied content, you need to worry.