Learning options will indeed mushroom for business students and leaders, but it will take prudence and shrewdness to find and utilize the best option.
Learning in a face-to-face human community, as humans have evolved to do over hundreds of thousands of years, may always be the ideal - especially in an endeavor that is as relationship-driven as business.
Specialized management courses are useful but should come well after the complexity of management and business are understood.
The original and brilliant idea of an MBA was the opportunity for students to study the theory and application of business and management principles.
The primary goal of management education was, as originally conceived, to impart knowledge that could be applied to a variety of real-world business situations.