If we had 2020 material tech and 1918 social tech, thousands of mechanically inclined folks would be tooling up to build oxygen concentrators and ventilators for their towns. When your grandparents die in their homes, remember it was the medical licensing regime that killed them.
https://twitter.com/ESYudkowsky/status/1236715988747313154
https://www.instructables.com/id/The-Pandemic-Ventilator/
https://coronavirustechhandbook.com/hardware