Shopify Plus has become a go-to option for dealing with enterprise eCommerce. It's one of the most famous enterprise eCommerce platforms in the market.
As more people have started using Shopify Plus, this popularity has also exposed the shortcomings and disadvantages of Shopify Plus. For example, Shopify Plus lacks some of the required functionalities that other alternative platforms possess. This is one of the reasons why Shopify Plus alternatives are increasingly popular in the domain of enterprise eCommerce.

Further Reading: https://www.growmax.io/blog/shopify-plus-alternatives