May be categorizing the different private equities can be helpful here. A PE interested and invested for growth is always the best outcome. A PE only looking to salvage and squeeze is that gives the bad branding to PE.
It basically comes down to interest rates right? If interest rates are low, the discounted-cash-flows analysis will favor maximizing long-run profitability. If interest rates are high, you can do better by squeezing the business in the short term and placing the money you obtained into some sort of high-yield, low-risk investment vehicle.
Why does everything have to be obsessed with growth? Especially with practically every (first world, at least) country having a birth rate well below replacement.
This is what we do. One portfolio company has a product on old tech. We bring in a product team, a CTO, internal tech teams. Help shape a roadmap to tackle the most egregious tech and product debt so teams can move faster. Fix non-existent or outdated pricing strategy that has not evolved with the industry. Fix, grow, or evolve GTM to reach new customers. Help bring fresh leadership resources in when needed.
Industry is typically "boring" and systems are valuable, but aging. We invest, modernize, and try to grow new rev streams, new customers. Portfolio is SaaS focused (can't speak for those that invest in real estate and healthcare).
The employees of the PE also co-invest so everyone is aligned to help the portfolio companies grow and exit. This is a multiyear process.