What you're asking is like "Why should i pay for N different internet saas" because they share a common characteristic (e.g.they use a database) paired with the

What you're asking is like "Why should i pay for N different internet saas" because they share a common characteristic (e.g.they use a database) paired with the naivety where you don't understand the underlying complexity of a business application and think you can do this all by yourself