I'm split on how much cat "needs" a turbo. Obviously, when we throw around "need," we're stretching the word, so let's say "need" means the rider is mostly lacking in power, not riding ability. That cuts out at least half of us - including me - except when it's pretty deep. And unfortunately, I don't see it that deep very much. Elevation factors in too, obviously. But all things considered, I'd say Cat makes a sled that's a perfect fit for at least half the mountain riders out there: I'd bet if you swapped 100 riders' sleds for a Catalyst, it'd be the minority who had a clear reason they wanted their old sled back, including the turbos.
That said, there's the bragging rights aspect, and the guys who use the turbos to mash meadows. Then there's the elite riders on social media who can take advantage of about as much power as you could throw at them, and they'll talk about days where they needed the turbo. Some buyers just imagine themselves into those boots, so they "need" a turbo. In theory, if Cat builds the best overall sled for most riders, they sell a ton, and you leave the saturated turbo market to Doo and Poo since it's small. In reality, if you're already spending $15k, $20k+ probably isn't a big stretch for that turbo gold. For the manufacturer there's probably more profit margin available, plus some coat-tail effects.
So, assuming Cat's future is assured, there's an argument either way. What would I do? I'd focus on the NA and spend a little money on marketing - almost entirely focused on social media. You pay a couple up-and-coming riders and a producer to churn out content; that probably does more good than a factory turbo anyway. Meanwhile, you let aftermarket companies absorb the risks and costs of selling a turbo (but help them out as much as you can) so there's a decent option for Cat guys who really want a turbo.