If someone has very large capital, of course he knows the impact of the investment itself, where he will choose, of course he will choose the long term rather than the short term. Of course he already understands the risks he is taking and can take responsibility himself. It's a shame that your friend actually quit his job. This job can indeed make quite a lot of money if we have the ability to predict or analyze it. However, it takes time or quite a long process to achieve all of that, we cannot or just in an instant or overnight we can achieve all of that.
It is not surprising that someone quits his job and goes into business. Many people who are working professionals know that if we continue to work all our lives, we will not be able to make a good future for ourselves and we will only be hand to mouth and will never become rich. Many people save a little and quit their jobs and start their own businesses be it online or offline and many people have done so. They are successful but only those who have already thought about what to do after leaving the job and how to achieve success.
When you leave a good job, you have no other option but to be successful, for which you have already thought of the best course of action that you must adopt. Trading cryptocurrency from a job can be very risky especially if a person is new to cryptocurrency and doesn't know well about coins and market movement it takes years.