Regarding this question: "Are Investment companies safe for investing a large sum of money?"
There could possibly be some specific question this person is asking about, but I think there are a lot of questions that we get that should be closed duplicate of a canonical "Am I investing correctly?" Do we already have one of those types of questions?
At least then I could say
"Use this formula based on your age for allocating among bonds/stocks/reits. Invest in index funds. Vanguard has the lowest fees. Don't buy mutual funds or individual stocks unless you enjoy the risk and the fees."
And people could vote me up or down, and I could compete with the guy telling me this advice is hogwash and that people should be trading their own stocks because they can beat the market if they do research... and this could happen in one centralized place instead of happening over and over again on many different questions.
I found the following questions which could have been resolved duplicate if there was a canonical question.