Boeing is trashed and announced layoffs.
GM is as well and are suspending their dividend, Ford isn't exactly happy either, and plenty of other S&P giants.
Disney has taken a huge hit due to sports/ ESPN revenue, theme parks, and cruise lines.
Small businesses aren't on the S&P 500, but unemployed people and small businesses all buy from companies in the S&P 500.
Apple also happens to have a massive cash pillow to soften their fall. Nobody else has reserves like Apple and a lot of companies have substantial debt.
The stock market hasn't quite priced in damage yet.