Personally I think Samsung/Harman has been a good corporate parent of their high end brands. I was rightly concerned when they bought JBL back in the 1990s and turned out a bunch of mediocre products. But since Samsung took over, they've allowed the consumer, high end, and pro divisions to separate and put out great stuff for each market.
They seem to allow each brand to focus on their core customers instead of trying to be all things. Like any corporate parent, if a division hits their numbers, management continues as is. If not, things change. But it seems like there's continuity of brand identity and quality.
And there are still plenty of boutique brands to explore. I'm more concerned about their continuity when founders leave.