Moving up the ladder within company, unless you're a fullstack dev, is difficult. There's barely any innovation, or scope for it, unless you work for a core team that develops one of the inhouse frameworks. After a while, the boredom gets you. With each passing year, you understand how detrimental all of it is for your career.
You can learn new tech, but on your own, because most of the times, it won't align with team requirements. Again, unless something falls within the policy, it ain't gonna happen. Policy runs everything here, from people to process.