If this was a concern than Search Engines would be worthless! They couldn't embed any snippets from any webpage ever, as all materials are by default copyright

If this was a concern than Search Engines would be worthless! They couldn't embed any snippets from any webpage ever, as all materials are by default copyright their author with no license for reproduction. I'm very sure there have been several legal cases involving search engines extracting information from the website. Spain's news organizations come to mind - the end result being that not licensing Google was bad for business.