About five years ago, there was a lot more to be excited about with this company.Let's rewind the clock five years, to the end of 2020. The COVID-19 pandemic was still a disruptive force in everyday life, and the stock market was rising rapidly after major economic stimulus and optimism that life would return to normal.My portfolio also looked very different than it does today. In fact, my largest investment at the time was a company called Boston Omaha Corporation (BOC +0.53%), an emerging conglomerate tha ...