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Re:SoftBank’s debt obsession by Simon_says on Tuesday November 06, 2018 @05:47PM (#18395600)
The key is consistently.

The S&P 500 returns are wildly variant, and the 9~ % only comes from averaging a century of growth. Whole decades might see a loss.

Re:SoftBank’s debt obsession by TomVDB on Tuesday November 06, 2018 @07:00PM (#18396014)
Based on numbers here: https://seekingalpha.com/article/2789035-s-and-p-500-index-r...

1940-1950: 9.3%/y

1950-1960: 20.0%/y

1960-1970: 7.7%/y

1970-1980: 5.9%/y

1980-1990: 17.2%/y

1990-2000: 18.2%/y

2000-2010: -1.0%/y

So only decade with negative growth.

Add in the depression and you'll probably see a bunch more...

Re:SoftBank’s debt obsession by fujimotos on Saturday November 10, 2018 @02:05AM (#18420300)
You need to consider inflation. In 1970, the inflation rate was 7-8%/y on average, so the "growth" these numbers imply did not exist in reality.