You realize that Imagine Dragons are also content creators and that Thunder is original content? If OP actually created original content then he would not have been claimed.

Copyright laws actually incentivize people to make original content instead of reusing old content. If you actually make new content, you own the copyright to it and can't get claimed, now can you? And if people like the OC you make enough to steal it, you can get paid for it, incentivizing you even further to keep creating. This video is still available for everyone to watch on YouTube and has been seen 800,000 times. If it's really killing OP, I'm sure he could get just as many views with a video featuring only his own 100% original content, right?