You are right that it restricts competitiveness, but even before that, integrating people thinking different and from different backgrounds requires a level of

You are right that it restricts competitiveness, but even before that, integrating people thinking different and from different backgrounds requires a level of flexibility and resilience that is probably missing from these entities. It’s not rare to see Japanese people looking for companies that recruit foreigners and “exotic” profiles, using that as a canary to signal a company that can deal with a range of issues, and won’t try to have them quit if they take a parental leave.