Real estate is a special situation with lots of subcontracting. They can make it work. In big multi-unit residential cities like NYC and Chicago, the doorman in that high-rise is in a union that provides all his benefits and has a set pay scale. The building ownership just contracts all that stuff out to the union. But that doorman can go work in some other building owned by some other owner too. You don't want that happening with your corporate employees developing and managing your consumer products.
At least, I think that's the way it's supposed to work. I used to work at Goldman, and at some point, someone told me that the number of legal entities was roughly the number of employees. I'm not sure how true that was, but I'd believe it.
There are some good reasons to allow these separate legal entities, to allow orderly partial collapses of businesses to reduce the risk of cascading systemic failures. There's also something to be said about either keeping businesses small enough that failure of a handful of them won't collapse markets, or else single-purpose enough that they have less direct effects on multiple markets. The flip side is that diversification across markets should tend to stabilize firms, and larger firms are also more able to effectively diversify.
The analogy would be if a landlord created a shell company, and then only gave that company it's legal liabilities without any assets. That's what J&J did here and why this case is so obviously egregious.
If you could do that, it would be a get out of jail free card for all legal liability in all cases. It's essentially renouncing rule of law
https://www.investopedia.com/texas-two-step-bankruptcy-defin...
In the case of liability avoidance, it's hard to do if the (real-world human) owner of the airplane is also the pilot at the time of any accident. They might not be able to sue you as the owner, but they can still sue you/your estate as the pilot, or the person who oversaw the maintenance, etc.
I imagine that the limited liability helps if there are say 20 people in the syndicate and you own a share of it. One of the other members can crash the aircraft into something expensive, and as long as it had nothing to do with you or your negligence, you shouldn't be liable beyond your share value going to 0 (or having to pay up any unpaid capital to the book value of your share)
An unincorporated partnership would make this much riskier.