What percentage of bitcoin investors are gamblers ? Where will this figure be if we consider worldwide users ? I think it will be somewhere between 10-20% ? Also, it is possible that most of gamblers are still not bitcoin investors ? I see less chances of the later happening.
Most people who hold Bitcoin,the majority of them are sure gamblers.The reason is simple,the gambling industry being the most widely accepting Bitcoins as a form of payment and only few other industries are as open as gambling platforms to accept cryptocurrencies in general.That is why I think it is in the 70-80% of the users not just 10-20% as most people who hold a large amount of Bitcoins,also have some set aside to entertain themselves and what better way than gambling to have some fun.
I don't know how you arrived at 70-80% of Bitcoin holders being into gambling, there is no source for that information and I feel it is completely wrong. Holding Bitcoin and being a gambler are two different things. No doubt integration of cryptocurrency payment has helped in the proliferation of gambling platforms and also make a lot of people to start gambling, that is not enough reason to conclude that 70% of Bitcoin holders and into gambling. In my country for instance, crypto gambling is not a thing and the percentage of people using such platform is minimal compared to the numbers holding Bitcoin. Gamblers are many and are mostly using conventional payment systems in doing their business. Similarly, Bitcoin holders are many too and are not much into gambling. Many of the people that are using crypto for gambling are not holders but can be regarded as users because their winning are easily converted to the local currency via Binance P2P.
Investors are people who invest in different businesses and I doubt Bitcoiners are also investors.
You need to add more clarifications to this. Investing in one business also make you an investors. Many successful businessmen are specialised in one commodity, why can't you calk them investors? Because they do not invest in many businesses? Bitcoiners who bought Bitcoin are also investors because their committed their money in the expectation of some profits.