Of course, you can learn most of those things. However, it is my belief you will soon tire yourself. Getting to the top of everything is hard enough, staying there even harder.

I used to be up to date in a lot of domains. 3D modelling, app frameworks, web technologies, back end, front end. Those days, I find it's hard enough to focus on being up to date and relevant with front end web development while balancing an healthy life with friends and family.

You can do it, but remember that there is an upkeep to being relevant in a lot of domains. If you can deal with it, sure, go ahead!

However, what I would recommend you is a good team. I'm finding I connect easily with people that have complementary skill sets to mine, and it's a great experience.