This article confirms that the low interest capital days are coming to an end. Porsche too thought they could grow with debt. Then the low interest capital ran out and they got bought by Volkswagen.
I think you're grossly under represending the porsche thing. Porsche did a very very well executed short squeeze on VW and very nearly succeeded in acquiring VW.
Look it up. It was a very ballsy move. Even by failing, it still went down in history as a pretty masterful move. It also caused Germany to change their accounting laws around things such as that. In the US an equivalent move would be illegal. The US learned from Short Squeezes when the NY City Council tried to punish Cornelius Vanderbilt and he exacted revenge on them.
