If you are a new business, then building your online presence from zero could take weeks, months, years, or more on Instagram. However, if you buy real Instagram followers probably in hundreds or thousands, you immediately get a good start and can grow your followers at a faster pace.
Also, it allows you to focus on other important tasks of your business that needs your attention. Buying followers saves you a lot of time and energy which can be spent on doing R&D, managing sales, daily operations, administration, and more.