I'm kind of in this space - 3d knitting is pretty interesting, but knitting a sweater like that takes a long time (I forget how long, but I think it's 1-2 hours), so it's not really a solution for working at any sort of scale. Unless you build up inventory or have a ton of machines. But the machines are super expensive compared to regular knitting machines.

I also think that wholegarment knits look kind of cheap and that sewing actually adds structural integrity and durability to a garment.

But anything knitting or clothes related is really fun and challenging and good for them for making a business out of it.