I can't link to articles yet, but here's a quote from an article about Corporate Debt written by Jeff Cox for Nightly Business Report from November 21st, 2018.

Over the past decade, companies have taken advantage of low rates both to grow their businesses and reward shareholders.

Total corporate debt has swelled from nearly $4.9 trillion in 2007 as the Great Recession was just starting to break out to nearly $9.1 trillion halfway through 2018, quietly surging 86 percent, according to Securities Industry and Financial Markets Association data. Other than a few hiccups and some fairly substantial turbulence in the energy sector in late-2015 and 2016, the market has performed well.

In fact, Fitch Ratings forecasts bond defaults for 2019 at the lowest since 2013, with leveraged loans at the lowest since 2011.

Such high debt levels are “certainly something to take notice of,” said Eric Rosenthal, Fitch’s senior director of U.S. leveraged finance. “In terms of the systemic risk, at the moment it’s not there.”

One reason markets worry about debt is that there’s not as much cash around to cover it. The cash-to-debt ratio for corporate borrowers fell to 12 percent in 2017, the lowest ever.

I'm not one to speculate, for many reasons, but all of that quote sounds like very risky behavior to me.