I think it comes down to the current financial realities of film-making, as the article touches on. There are certainly outliers that are revered by those who seek alternatives (David Lynch's work for example), but these are a small minority. I think general financial stability in some future (hopefully soon!) iteration of society would allow more experimentation- artists who are not starving artists are much more willing to take risks and stay true to their vision, profit/marketability be damned.