This statement was made by Ubisoft's director of subscriptions, Phillipe Tremblay, who recently spoke to Gamesindustry.biz about the digital future and Ubisoft Plus specifically. Tremblay states that people eventually "got comfortable" with not owning their CD or DVD collections, and that a similar shift in attitude "needs to happen" in gamers.
Well, that's not really true isn't it? I'm not against stealing games from corporate devs, but imagine you decide to get a kick ass printer, those they use in companies. Those printers are usually leased, not bought, and the printer leasing company usually updates and upgrades it every X time. The company pays for the use of the printer, but they don't own it. The leasing company is very clear in what they are selling you, they are selling you a service. You still need to have a place to store the printer, you still need to pay for the ink used, you still need to have paper, just as a game needs storage space, a gpu and all the periferals.
Imagine if taking a printer from the leasing company makes them lose 0 money in material costs, since this is what happens with digital goods, they still lose money from you being able to use the printer without paying the lease, when you would originally not be able to use it if they didn't develop it. In that sense, what you stole is their revenue from the lease.
All of this to say that pirating IS stealing, and I still do it proudly. All of this to say, either they let me own it or I'm stealing it.
I don't know if it's true or not, but it is what the comment OP was referring to.