You don't see some guy drop a note.
You are walking through Time Square. Huge crowds. You see a $50 note on the street. You pick it up You haven't stolen anything.
Now assuming that after repeaed attempts to return said money to the allged owner, the alleged owner repeatedly refuses tio accept the money, and wouldn't even acknowledge that they lost any money at all, the money reverts to you the finder, after a specified time period.
When the finder of this Apple smartphone repeatedly tried to retrun it to Apple, and Apple repeatdly refused to accept it, and wouldn't even acknowledge that they lost any phone at all, that's it.
No theft was commited anywhere.
And you think the trigger analogy is stupid? Moron.
If it's not reclaimed in a certain period of time you might even get part of it for yourself.
You are arguing from your personal point of view and moral base. The law is more complex and continues to recognize that you do not have an absolute right of ownership to things you claim you just found around and about.