It's good to always diversify our investments multiplying our sources of income as it puts you on a safer angle to fellow that is dependent on a single source of profit. As you take your profit to open a business for your wife make sure the business is a lucrative one that your wife also have passion for, because it's one thing to open a business another thing is to run it well that it yield good profits.
Yes it's true that now a days single salary is not enough for whole uses of life so the decision of setting a base of business for wife is profitable. Diversification is beneficial in one case that if in one business you face some troubles then surely in other business you will have profit.
Benefit of setting business for a wife is that she will helps at each and every step of life so its not necessary that only male will earn money but female should also get financial freedom because they also have some desires.
Another benefits of taking profit from bitcoin and set another business is that you minimize your losses because bitcoin is volatile in nature so whenever it gets down in price you will have no worries about the down movements.