Marketing Opportunity...Blown?

Now that it's been three years since their last first-round episode (upcoming cartoon spin-off notwithstanding), I have to ask: Am I the only one who thinks that Nickelodeon blew a major marketing opportunity with this show. I know the concerts made money. But I'm surprised that there weren't a lot of toys and other items like with so many other Nick shows (Sponge Bob, Paw Patrol, etc.). There was a time back when the show was in its original run that my daughter probably would have begged for anything like that, had it existed. So I think Nick saved me money but blew a major opportunity.