[ecb_penguin]

> all the juniors that were hired, now mids or seniors, are going to jump ship to whoever is going to pay them the most

Yeah, that's the point!

> So, the company can either grow talent and then pay them market rate or hire at market rates from other companies that grew them.

It's not a zero sum game. The simple fact you overlooked is not every junior jumps ship.

> Hiring juniors, while good for the industry in the long run, doesn't really benefit an individual company

Things that are good for the industry DO benefit individual companies. Having a large and capable talent pool is good for everyone.