OP is a sci-fi writer himself, so he's in a good position to comment. The TLDR of this piece is that most sci-fi is produced by commercial writers trying to earn a living by producing relatively formulaic work that follows genre conventions. The problem is some of today's tech-billionaires are acting as if these books are bibles of future prediction.

Oddly, people seem less influenced by the positive, utopian sci-fi visions. 'Star Trek' depicted a humanity that moved beyond money, and where society was devoted to exploration and the advancement of knowledge. You rarely see billionaires go on about making the world like it. Perhaps unsurprisingly, as there were no billionaires (or any need for them) in 'Star Trek'.