At MBA programs with accelerators, committed entrepreneurs often lose funding to polished classmates with Sales skills, but no actual immediate intention or ability to build a business. That is because between VC and high salaries elsewhere, the grind can be too big a leap when you have loans to pay. YC can easily filter that by looking at an applicant's execution experience in the past, or check if their resume shows more blue-chip brands than meaningful growth. For some, the MBA is a tool, for others it's a merit badge.
It felt like 30%-50% of my classmates got enough credits to get an Entrepreneurship major, because they want to build a business one day, after MBA (just not immediately after, and not necessarily VC-worthy stuff). Entrepreneurship through acquisition, running your own fund, joining VCs, leading family businesses, there are a lot more options for MBAs.
The bigger issue is that top 5 tech giants don't help by acquiring or cloning the work of CS MBAs or those who stick it out as Entrepreneurs. With lack of regulation and increasing market power for the giants, fewer people who can make something worthwhile will be wanting to do startups instead of working for 300-700k at a big company. Ironically, of my committed entrepreneur classmates with tech backgrounds, a lot more of those that started hardware, or healthcare, or food-chain, or other distinctly "non-virtual" startups continue today. That's because the virtual/social/saas ones were aqui-hired.
As a techie at a top MBA program (20 years of coding so far), I took VC and Finance classes, Patent Law, and CS Masters classes to round out my skills, while I built my company till 4 am every night. The MBA experience taught me when NOT to raise money. I've been bootstrapping and focusing on users and now run 2 different sites that are growing well. That MBA is actually paying itself back!