Until recent times, commissioning was how it worked. This was why we only had paintings of kings and that guy called Jesus until Bruegel came along and painted peasants. Nobody was just painting whatever they wanted to paint, hiring a gallery and selling their 'art'.
The title of 'artist' is also an interesting one. Some titles have to be earned, for example, you can't call yourself a 'genius', an 'intellectual' or a 'hero' for obvious reasons. Yet creatives can call themselves an 'artist' as job description without society deeming them to be an 'artist'. In the olden days, before mass production, artists were just tradesmen doing a good job at whatever their trade was.
Our idea of art is deeply tied into capitalism. Compare the art of indigenous peoples with Western art. Art is all about fame and fortune rather than a love of the subject material and the craft.
One problem with the current status quo is that most artists are not in the commissioning game. Artists want to paint whatever their thing is, not some patron's dog, fancy house, religious deity or elderly relatives. If you do know someone making a living from painting people's dogs, then the question has to be asked, are they a real artist, or just a craftsperson?
Take the case of the architect, where the client is invariably calling the shots. Are they an artist? They don't need to be since they have the title of 'architect', however, few of them are called 'artist'.
Being 'artist' also comes with some understanding that the 'artist' doesn't have to work in the conventional sense, and therefore an 'artist' is high status. It works a bit like 'foot binding' in that regard since some people will want their kids to grow up to be 'artists', as in high status and not working for a wage. Sometimes this is just to validate the parent's life choices and shore up their status.
The real art of the age is all around us and made by commercial artists.
The commercial artist has a client and patron in the company they work for. They make adverts, packaging designs and such like, working within constraints. If working for Ford, the commercial artist isn't going to redesign the blue oval, they have to stick to the style guide, working within the constraints to make something new, in time and on budget.
So yes, commission what you want from an artist that puts the customer first.
Regarding the article, in the UK we had an art movement at the turn of the century with the likes of Damien Hirst, Tracey Emin and their ilk, pushed by Saatchi into art superstardom. However, about a year before 2008, this hustle came crashing down. If we currently have some cooling off in the art market then that is an indicator that the economy as a whole is heading for tough times.