Copywright

The video

3 things I learned about copyright:
1. YouTube can detect when something is copied shortly after someone tries to upload it, because they compare the video with a reference of something they already have in their data file .
2. 20 hours of video are uploaded to YouTube a minute and they have to compare every single one of them.
3. The companies and businesses most of the time will allow the video to be uploaded because of the exposure it gives to them. They will benefit from them because they can put advertising and things on the videos and it can make them more popular.

2 things I agree/ disagree with:
1. I think that companies, businesses, and artists should be more carful about what they allow other people to copy and put on the internet.
2. I think that it can be a good idea to let people upload copyrighted things, because it allows businesses to get new audiences and modernize what they already had.

1 Question I have:
1. Why don't more businesses use the technique of uploading videos to YouTube and make advertising from it?