Until the next generation finds a new trending game Fortnite will be the go to gaming advertisement surface with endless crossovers, pop culture references, merch bait products and memes so the kids can be glued to the screens and make the parents spend money.
It’s a brilliant move to involve Lego as it’s widely popular, but I can’t see people using Fortnite as a sort of storefront/creation kit as it will probably have its limitation compared to a regular game purchased and played on its own.