This is a great topic. Tesla (one of my personal heros) was indeed treated like a magician for his incredible advancements in technology. Unlike magicians though, I'm sure he wished his audiences completely understood all of his creations.
As technology continues to advance at such a rapid rate I think people will be less and less impressed with the "tricks" that these gadgets perform. While the performances of Marco Tempest and others like him are entertaining I think they do lack a sense of mystery and wonder. The introduction of electronic gadgets creates confusion and forces the audience to question whether the "magic" is being created by the tool or the person.
That being said I think (and hope) that the value in a pack of cards will be eternal. Magic done with 52 pieces of relatable paper shall always be undeniable