Ask HN: Business opportunities arising from return to "normal" social activity?

In Australia we are emerging from lockdown to 80% - 90% double vaccination rate. Hopefully this means a return to something like normal life. That's got me thinking - societal change represents opportunity. I wonder what new economic niches are now available with this return? I wonder what economic niches were perhaps abandoned during pandemic and are now available to new entrants. Has anyone else here on HN been thinking in this direction?