Concerning "And quite likely brings better results for both the investor and the founders.":
That "[it] brings better results" for some groups does not imply that it more healthy for this group. Also the other way round: "more healthy for some group" does not necessarily imply "better results for this group".
In this sense I did not think that this phrase was to be considered an answer to my point.
Hum, ok. You are interpreting "better results" in a strict monetary sense, without accounting for second-order problems from bad deals.
It looks more healthy for both groups. I do expect it to bring better both first-order and second-order results. (Those two are always correlated, and on investment relationships they are very strongly correlated.)
But now that you enumerated more, you can add "national economy" too.