Was stored in an eBay warehouse: No, eBay does not have warehouses.
Had facilitated payment: Maybe, but eBay typically just links one Paypal account to another Paypal account. eBay does not actually touch the funds. (Paypal has been it's own separate company for awhile now.)
Shipped it out in eBay packaging: Unless they're using a service, typically shipping is up to the eBay seller.
So I doubt this ruling affects eBay.
They do now. They are in the middle of moving most of their sellers to a program called Managed Payments. eBay handles the payment processing through the program. Sellers do not receive money via paypal, but their own bank accounts. eBay batches the proceeds of the sales and ACHs the money daily M-F.
The transition is ongoing, but the goal is all sellers with stores will move to it eventually.
https://pages.ebay.com/seller-center/service-and-payments/ma...
eBay used to have a service where you could take any random junk to their mall kiosk or a FedEx store and eBay would sell it on your behalf. That would pretty much require them to have warehouses.
Is that service dead?
But the program does seem to be dead.
I found some interesting forum discussion taking the opinion that eBay strangled consignment businesses by choosing to heavily discourage auction sales (as opposed to fixed-price listing). They did that because customers on average strongly prefer fixed-price sales, but I'd be open to the idea that this could be a case where giving the customers what they want turned out to be a mistake for the business.
eBay saw themselves as competing with Amazon in the "buy things over the internet" space.[1] But by emphasizing fixed-price sales so much, they arguably made themselves much less distinct from Amazon.
[1] I was surprised to learn this, as I had always thought of Amazon as being for buying things new and eBay for buying things used.
[0] At least the later version I don't know if they used a different scheme earlier. They must have because the sniping services that existed in early eBay don't really make sense with proxy bids.
It's been a thing for more than 10 years, it's very well integrated, it's not necessarily transparent that the payment goes through Paypal.