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Just go sell it and buy or build a new bussiness in a real life. It's better i think.
But, what's going on here is that the OP's friend to save his money for his kids rather than putting more effort to it by doing a business. Saving here means to save his money and leave them all alone for quite some time and let them grow in value. By building a new business, isn't it ruining the whole purpose of saving?