Superior in every way except upkeep. From what a couple of experienced disc golf course designers tell me, artificial turf is superior in feel, in traction, and in many ways. However, most disc golf courses need minimal maintenance. And without regular upkeep, turf will not weather well in the elements. I know. I've been a school administrator for years and we had artificial turf on two of our sport stadiums, and on a set of practice fields. We had definite regular maintenance on the turf.
Discgolfpark tees only need to be resanded once per year IIRC, and that's pretty much all there is to them. They might not be ideal for a nine hole project that's just going to be an afterthought for a county, but for any course that has even half a club attached to it, that should be handled well enough.
Of course, this being the real world it'll get done by the same four people every year more or less.
I'm most surprised that we haven't yet seen the emergence of a new company specifically making quality Disc Golf Targets (Baskets, whatever). It's a completely different manufacturing process, as well as sales pipeline, compared to discs - but yet disc manufacturers are the only major players in the game.
Thinking aloud here:
The only company that I can really think of that has attempted this is/was Arroyo, but unfortunately those targets are just not good quality. Not trying to be rude, just my opinion from experience.
There are a couple extremely small companies trying to do this; El Guapo baskets up in the PacWest immediately springs to mind (they're on Facebook, started as a dude just making them and IIRC he recently sent a target to the PDGA for some sort of certification) and Predator disc sports or some such name in Ohio. If you watch the Red, White and Booom footage from the last couple years (I know this year, think it was the year before as well) the second hole at Belmont park features one of their baskets, and there's a course near Cincinnati that has them installed, I believe.
As to your broader point about the basket manufacturing market, to me it's one of those things where, as mentioned before, it's a smaller market within an already (comparatively) small market with limited additional growth. How many times do courses upgrade baskets, maybe once every 5 or 10 years or so, if ever? Comparing that to how many people buy every new disc released because it will revolutionize the way they play disc golf or let them add an extra 200' to their shot in an instant, it's not hard to see baskets and course materials as a somewhat necessary but not huge growth market, especially compared to discs.
So you can probably look at it more than two ways, but the two obvious ones are necessity and advertising. Necessity because people gotta have courses to sling plastic, so if you don't bite the bullet and make the baskets who else will, and advertising because you're putting your name, whether through the huge logo (ever wonder why the Innova logo is so giant on the band?) or the unique design of the basket (a Mach 3 is pretty instantly recognizable, and a Chainstar is somewhat easy to spot by the single bottom ring). So after someone has played their round they've been seeing your logo and signature for eighteen holes, and it's the last little bit of disc golf logos they'll see besides their discs until the next round. Maybe not a major driver, but still something to think about.
That's not to say there isn't money to be made off baskets, but compared to the disc market and just the optics, I seriously doubt there's nearly as much to be made. Which makes it hard for companies that JUST do baskets to make enough for it to ever be more than just a side hobby that maybe makes you a few bucks and lets you write off that sweet new welder and welding mask on your taxes.