Earlier quoted context omitted.
Not who you're responding to, but for just one possible reason look at Lee Jae-Yong. He's the head of Samsung and was arrested in 2017 for bribery, embezzlement, etc. Chaebols (name for families that run these mega-companies) are both respected for success and disliked for corruption as I understand it. While there are these mega-companies in RoK and Japan that have especially "close" relationships with governments,…
Keiretsu-type groups that do everything in-house can prevent whole business sectors from emerging. In Japan the relative lack of independent software companies have been attributed to Keiretsu structure. Software development was just in-house activity to serve established product divisions. It was not seen as business to be sold independently. For example, Toyota made whole integrated CAD/CAM/CAE system called 'TOGO'…
Oddly enough, Korea and Japan have even higher percentage of SMBs than in the US (can't remember the link but the OECD published such stats). However historically they served only as subcontractors to the chaebols and keiretsu groups.
I think that's changing in Korea and Japan as of recently. In the last 20 years, there has been a rise in startups serving massive audiences in online gaming, social media, and e-commerce. Think Nexon, Daum, Naver/LINE, Rakuten, SoftBank, etc.