Is there a fine line between "reality shows" and documentaries? This is just my take on it.
As soon as the film editor attaches two and more scenes together in a documentary, it basically becomes scripted. Although, the degree that script reflects a chain of events, or a story fabricated from what could be suggested, varies. My thought is there is likely a spectrum of approaches. When I watch a Martin Scorsese documentary, it is usually good and I believe it reflect something that happened. I think a good example of how two approaches to the same footage can produce two different outcomes is "Let it Be" and "The Beatles: Get Back" Two documentaries with different stories.
"Reality shows" are cheaper to produce. We have hundreds of channels and not enough money and content. What passes for a "Reality" show is a mutation of the documentary made by producers who perhaps are only thinking about the bottom line ($$$). There is a cynical side of me that imagines a hoard of industry bottom feeders that imagine they are being creative with shows like The Bachelor. That is literally the only reality show title I know. That assessment may be totally unfair and may not reflect reality. I also imagine that not everyone in the industry is doing what they imagined they would doing. That happens to most, or many, of us in life. There is also the notion that by producing "reality" television show, there is money left for more worthwhile forms of entertainment. Honestly, typing that made me gag a little, but I it must be true to some extent because there are content creators out there that are imaginative and want to attempt to create something good, and sometimes they get a break. If successful, it works out for everyone.
Game shows are a form of reality tv too. Historically, they have been scripted too, causing controversy and sandal.
After writing this I thought "Hey! Why don't I do some reading on the subject instead of just making fart noises?" My brain can make some great fart sounds (and some rather flat attempts).
This is from the Guardian and I found it interesting.
What Was the First Reality TV Show?
This is an interesting list because some of these title really seem like they have a documentary vibe to them.
The 15 Earliest Reality TV Shows
(This has some length to it. My brain tends to jump around. Apologies for missing words, sentences that are not complete, and misspellings. I would re-read it again, but that means I'll start editing it again.)