Duplication Not really. If two companies create a product, and have a similar market share, they are producing the correct amount in total. If they aren’t, one of them will be running a loss and be forced to adapt.

Also, because there are two or more options, there is competition, innovation and a push to optimize and lower prices.

Profit

Yesn’t. Thats the point of properly regulated, to force the actors into doing things right instead of abusing economic power. AKA, if you have UBI, people won’t need to take slave jobs, and the companies will have to sacrifice higher profit for paying wages that keep their employees satisfied.