@Nick Church
The answer is: it depends...
1) you should think long term versus short-term solution. Yes maybe in the near future, more people may gravitate towards SFH rentals but it will be temporary if at all will happen because:
a) a lot of folks have lost and continue to lose their jobs, so they have to consider what's affordable
b) apartments offer many more conveniences (granted these aren't available right now), but people like to have access to the: pools, gyms, pet parks and etc...
2) consider geo area where you plan to invest. Do SFHs or apartments prevail there? is new construction of either happening? does it make sense to build more SFH? can tenants afford the rents of SFH vs apartment? who is moving there? what does prevailing population in the area look like?
Once you do your research, you should have a better handle on the next steps.
In general, here're a few articles to give you some guidance on SFH versus MFH:
https://www.biggerpockets.com/member-blogs/10850/87253-should-i-scale-my-investment-from-single-family-homes-to-multifamily
https://www.biggerpockets.com/member-blogs/10850/74895-five-reasons-why-i-chose-to-invest-in-multifamily