Ask HN: Spending time on VCs other bets

Our company was bought some time ago by a private equity firm which also has many other holdings than us.

Our company holds many excellent people in key roles. We are increasingly spending our time on helping the equity company run and increase the value of their other holdings and find ourselves with less and less time running our own business.

For example, our VP of marketing is being asked to "help out" running marketing campaigns for other ventures. Same with our VP of finance and biz dev.

We hold no equity in their other bets. Is this common?