Since 2016, social media companies have faced an endless barrage of bad press and public criticism for failing to anticipate how their platforms could be used for dark purposes at the scale of populations — undermining democracies around the world, say, or sowing social division and even fueling genocide. As COVID-19 plunges the world into chaos and social isolation, those same companies may face a respite from focused criticism, particularly with the industry leveraging its extraordinary resources to pitch in with COVID-19 relief efforts as the world looks to tech upstarts, adept at cutting through red tape and fast-forwarding scientific progress in normal times, while government bureaucracies lag.