Small Niche facts

While investigating facts about Small Niche Business Ideas and Small Niche Ideas, I found out little known, but curios details like:

In 2000 Blockbuster CEO John Antioco turned down the chance to purchase Netflix because he thought it was a "very small niche business"

how to decorate a small wall niche?

Foxes behave like catdogs, because they are canines that share the same ecological niche as cats (catching small prey favours specific behavioral traits, convergent evolution)

In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across. Here are 2 of the best facts about Small Niche Markets and Small Niche Games I managed to collect.

what niches should not be chosen for a small business?