Tbf, that's a common bordering on default corporate setup in DACH in order keep ownership within the family [0], and in my opinion, symptomatic of why a number of German industries have been falling behind.

Some amount of creative disruption is needed to incentivize innovation, but there are roadblocks against that created by the families who ancestors took advantage of creative disruption 50-70 years ago.

Bosch, Thyssenkrupp, Aldi, Lidl, Bertelsmann, etc all do that.

[0] - https://www.lexology.com/library/detail.aspx?g=f1b666a8-1257...