Although the words business and Entrepreneurship have been used interchangeably they aren't the same. While Entrepreneurship has to do with the indulgence and bringing up of something new despite the risk, while, business has to do with capital and profit straight up. Here, you buy other people's products and sell them at a higher price.
Entrepreneurship is about innovation and improvement to generate profit which is the business side
Regardless of whether you would start a new business or just invest into something pre-existing there would always be risks so i think it depends on the idea if it is well-planned i believe i can invest in a start-up