Software is a layer cake and in my opinion from 20 years software development experience I firmly believe that the top 1-2 layers of your business application should not rely on some framework if you want to create a great product, stand out amongst competitors and have a technological advantage in terms of innovation and maintenance. Whatever happens at the top 1-2 layers is what your business cares about the most and what defines your business and you want to have 100% control to fine tune it. I've worked in many companies and on many projects and this made a difference every time.