Why Do We Constantly Push Back Against Disruptors?

When I was a kid, one of my cousins got a DVD player for Christmas. My family watched in awe as he connected it to the TV and inserted a skinny little disc which miraculously played a movie. The next day, my mom wanted to rush out to the store to buy one. VHS' worked fine in my mind. I couldn't understand what the big deal was, so I asked my Mom "Why?"