Selling a product / service through a national or global platform of an ecommerce website enables you to reach out to a wider audience with the possibility of a better sales outcome.
With an ecommerce website, purchasing time is unlimited, your e-store is always open which in turn boosts your sales
Having an ecommerce platform helps you to increase your conversion rate since people get a chance to immediately buy from you rather than wait to visit the store.
An ecommerce platform is definitely much cheaper, easier to set up and run than an actual physical store.
An online store can function with limited workforce, thus increasing margin between profits and spending. There is also the advantage of reduced risk which adds to the list of the benefits of having an ecommerce store.