Corporations are sitting on FOUR TRILLION dollars in cash. You truly know absolutely nothing. It's amazing. I'd think you would have to make an effort to be this stupid.
https://hbr.org/2020/01/why-are-companies-sitting-on-so-much-cash
From the article you cited - and apparently didn't read:
"While global uncertainty may be elevated, precaution doesn’t explain why some corporations are sitting on more than $100 billion dollars each. Taxes do".
Building up cash reserves is not the same as removing money from circulation forever, just as a personal savings account doesn't make its contents disappear.
That money isn't doing nothing. It's reducing the tax obligations of the corporations that have wisely invested it in a cash reserve as a hedge against confiscatory taxation. The tax savings gained by that strategy pay dividends to shareholders and bonuses to management and employees.