I think your analysis suffers from recency bias. Almost all inventions were incremental improvements on existing ideas and experiments, very few were huge Eureka! moments. Morse code was invented around 1840 and radio communication in around 1900. It took 60 years to go from wired to wireless. The first supercomputer was built in the 1960's and 50 years later we were walking around with internet connected computers in our pocket that had a few orders of magnitude more processing power than their early predecessors. That evolution took a lot of inventing to achieve, and it has fundamentally changed society. It may not have felt as transformative to you because you were alive to witness the transition and the different iterations that led us to where we currently are, but make no mistake, the level of technical advancement in the last 50 years is unparalleled to any other time in our history.