Agree, as you said, everything in this world is copied. When I read the Title this quote trigged my mind,
“Good Artist Copy Great Artist Steal”- Pablo Picasso
and on reading through, I thought
“The secret of creativity is to hide your sources”- Albert Einstein
Basically, We can steal but should be smart enough to hide :)
Most of the features that we see in iPhone or Android Phones are actually initiated by someone (source is unknown) and delivered perfectly by these guys.
It’s all in the execution of a Idea.