Might you tell us about any large, modern, fast-growing businesses which happily limit profits, so they can pay for high-quality customer support? Yes, it's "a choice". Sadly, it's an overwhelmingly popular choice.
And it's a popular choice because the consumers often don't seem to care. Many are willing to accept poor customer service in the pursuit of lower prices for goods and services.
> any large, modern, fast-growing businesses which happily limit profits, so they can pay for high-quality customer support?
Famously, Chewy. Amazon (used to?) have a reputation for being very pro consumer. Zappos.
Obviously, those are all companies that grew because if I knew of fast growing businesses that were sustainable and likely to succeed I would be investing other people's money fulltime.
Although I would argue that Zappos didn't "limit profits." Rather they (correctly) surmised that the only way to successfully sell shoes online as a core business was to be seen as bending over backwards from a customer service perspective.
Which is not to take anything away from them but customer service is pretty much baked into their model.