"Uncommon Sense" investing appears to be common sense for many investors except not many have acted upon good investing principles constantly and consistently.  Mark Homer in his book "Uncommon Sense" stated his investment is guided by the following 5 points and I have added the last point which is implied in his book:

In business, there are constant challenges for our "cheese" may be moved or even stolen by our bigger competitors, ex-employees, overseas dealers, e-commerce merchants and the next-door Ah Bengs. Covid-19 has accelerated these stresses and makes business transformation a matter of survival.

"Who moved my cheese?", a book written by Dr Spenser Johnson 2 decades ago has sold 26 million copies in 37 languages and remains one of the most popular business books since. In the book, it talks about 2 mice and 2 littlepeople and their responses to changes symbolized by the supply of cheese gradually moved away from the stations they have frequented. When the supply of cheese dwindles, some will work hard looking for other sources of supplies, while others may just sit still and angrily putting the blame on the system or even fate.