Some people see Bitcoin as a source of income and they wait patiently for it to grow so they can sell and it profit especially those who are traders, a lot of people see it as there only source of income but we forget Bitcoin is very volatile and anything can happen at anytime one can be expecting to get a huge profit 3 years to come from Bitcoin and Bitcoin falls, this has caused a lot of people depression and it is advised that will use our Discretionary Income to invest in Bitcoin.
Some people says before investing in other business you must make sure you have accumulated enough Bitcoin but that's not it one can still invest in a business that will give you income while accumulating Bitcoin especially for those who are not long term Bitcoin investment.
When you build another business that brings you good profit it will help you grow your Bitcoin more bigger.
Building another business while accumulating your Bitcoin is not a bad idea, and is very much possible, let's all stop seeing Bitcoin as a source of income because it may cause panic when ever there's a dip or fall in Bitcoin.
The idea of building a business while still accumulating your Bitcoin is not a bad one, however for the trajectory of Bitcoin and the growth bitcoin has attained over the years, I have not seen anybody that has invested for 3 years and hasn't gotten any profit as you postulated in your text.
There is no business investment that has profit margin that is not volatile, so making it sound as if Bitcoin volatility is one heavy disadvantage for investors when you know you can always manage your risk by investing with your residual income so that you won't grow panic attack, especially if your somebody that hasn't grown a thick skin when investing. So you have to invest within your capacity and overtime you can increase it as time goes. although despite this volatility, the growth of Bitcoin since it Inception has been astronomical, and that is why you see more investors coming in everyday.
Bitcoin has turned into a good asset class thereby attracting lots of investors into it over the years and that has been possible because of it's ability to increase overtime which makes it a very good asset for investment. Well it's a nice idea to accumulate more than enough Bitcoin against the future cause it has the potential of going higher than it's current price.
However people shouldn't forget that Bitcoin might be a good asset class but it's not the only asset for investment and one can still accumulate Bitcoin and still diversify into other good investments like Gold, Real Estate etc the idea of accumulating enough Bitcoin before diversifying is optional it's not a must for every investor.
Moreover there were people who's been investing on other areas before Bitcoin got introduced but then diversified into it cause they saw it has potential and that doesn't mean they'll focus all attention to bitcoin and leave other investments behind. All they need to do is set aside some percentage of the income they generate from different investments and accumulate as much Bitcoin as possible overtime using different good methods.