I agree, except that it seems dynamism is almost restricted to digital tech. I wish tech would spread its dynamism a little better into legacy industries, and give some productivity gains/disruption to those areas.
there's been plenty of disruption in traditional industries like retail, automotive, media, communications, etc.
part of the problem is that the remaining set of industries is pretty tough to make dynamic using technology simply because the explosive market size isn't there for various reasons. if you wanted to disrupt aviation, for example, a plane takes tens of billions of dollars to bring to market, and an airline requires outlaying billions in capex on planes.