Ian,
Leading to the end of that cycle, (50 years) I'd classify most of the projects commercial. Wouldn't you? Those that wanted a golf course wanted it for the wrong reasons, (housing) and, others, (perhaps good patrons?) fell victim to not hiring the right man for the job. Likely being swayed by some ignorance, and, a lot of salesmanship. Theses potentially great patrons over paid for work that turned out to be strictly commercial.
Few great courses were built before 1994. Yes, there were some (That I've seen) that are very very good, but, fall just short of greatness. i.e. Shadow Creek Spyglass Hill, Pinon Hils, BWR etc.
In 1998 this site helped remove the ignorance card from the equation.
So, getting to your Q, the commercialism will likely never leave us, but for the time being, the great patrons have emerged and clearly have spawned more real artists and great works. If that creates more great patrons...We will see more great works (and have) because few have the means, and those who do have the means, don't want to waste their money on models, that are proven failures. Which is nice!