Plagiarism is a age old form of fraud. For as long as high quality entities have been produced, there has always been instances of someone copying it in some way.
It may not seem worth the effort at the time. But protecting something that you create which has value, is an important part of the creativity process.
There are many ways to go about protecting your creations. A straight forward solution is to keep a look out for any instances you suspect your work may have been fraudulently copied. This is important as someone may be making money from your hard work. That is work you are potentially being robbed of which is bad for your business and against the law.
Working for a 3rd party can give you some defence against plagiarism. Larger 3rd party companies often have tried and tested methods of picking up on any signs of plagiarism. They also suffer monetarily if they fall victim to this, so it’s in their interest to keep tabs on it.