gambling is like business where people look to make more money from investing little money but most of them will get failed.
Gambling is nothing close to investment man, Your quote is fully wrong. In "investment" you're using analysis to calculate will this investment be successful or not, and the influence of probability is significantly low. And vice versa with gambling, where house of edge and EV is always negative. The only way to invest in gambling is to open your own casino
Saying gambling is investment is like saying buying cars is asset. While buying gold, silver, lands can be assets because in the long term the price will only increase and not decrease but buying cars are a waste of money because with time it will only go down in price in the long run. Gambling gives fun to play just like fun to drive a car but it's an expense not a savings!
In the votes too it is clearly showing the same as out of 96 votes till now, 90 have voted as an gambling is for entertainment, so this proves people do not consider this just as a source of income. Which has its own repercussions as well.