• Can gambling or crypto trading/crypto investment be considered as a skill?
Yes. It can. There is not clear definition on what a skill is or not. For example walking a dog can be a skill because of course there are professional dog walkers who make up to $10k per month.
• Can a gambler or crypto trader/crypto investor earn as much as $10k in a month besides any of the aforementioned skills?
Before I answer this question, I want to make it clear that there is a huge difference between a gambler and a crypto trader. My answers are in regards to a crypto trader or investor. And yes they can. Maybe not all of crypto trading but from teaching crypto trading courses, training and mentorship, youtube channels etc.
• What other skills not listed here, can make one up to $10k a month?
Blockchain developer, crypto educator and many more.