Read this: [Why publication in an academic journal matters](https://www.usb.ac.za/usb_food_for_thought/why-publication-in-an-academic-journal-matters/)

It says:

> 
> It is through publication that the research, including its scientific
>  and practical contributions, is disseminated to others in a particular
>  field.
> 
> 
> 

Ironically, how can you disseminate research when they put a high paywall right between you and the paper?

And in today's Internet world, can't anyone just publish anywhere?