ERP development from scratch is advantageous because it allows you to have full control over the features in development. The key problem of proprietary ERP platforms is that they focus on the general department structure. In reality, your approach to departments may differ greatly. Therefore, many proprietary features can turn out to be redundant. In this regard, ERP development solves this problem once and for all by allowing you to create a solution that fits your needs and not those of any other companies.