I bet you're a millennial, good for you. I crack up when I hear old timers b*tch about millennials not having a strong work ethic. guess what.... Millennials aren't schmucks.. they know that the world of 2020's aint like your grandpa's world of 1950 AT&T with pensions and job security, every generation adapts to the world they are brought up in..
I agree why bust your a** when all your hard work and efforts will be reaped by the folks up the chain. It's no surprise that in many companies top performers just go out in their own ( https://hbr.org/2019/01/why-some-high-performers-are-quitting-big-companies-to-work-for-themselves).
The days of company loyalty died around the 1980s , today's workforce needs to and has a very different relationship with their employer.