That’s actually just a tiny, tiny subset of the overall Enron corporate structure. The chart you linked just shows the capitalization and ownership of one of the off-balance sheet structures that Enron used to conceal debt. This structure was capitalized with Enron stock, which worked great as long as the price kept going up, but once the value of that stock fell beneath a certain value, the single-purpose entity used here became insolvent and accounting rules (finally) required that that debt be consolidated back onto Enron parent’s balance sheet.
It’s a situation with many interesting parallels in the crypto industry. Not only does history rhyme, but sometimes it really does repeat.
This is a huge oversimplification but my recollection is, there is a design arm of the IKEA structure which is a non-profit. They create and own all of the designs and IP related to products, which a different IKEA subsidiary then licenses and pays royalties on, essentially negating much/all of the margin of the finished good.
It's quite common to spin off daughter companies per project, it isn't unusual or illegal in any way. Without at least type and ownership information it's hard to tell if it's iffy.
