but I am telling you,these walls are funny. First you hate them, then you get used to them. Enough time passes, you get so you depend on them. That's institutionalised.

 you get so you depend on them （so 是个替代词，代替前文的 used to them）

=  you get used to them you depend on them

= you get used to them that you depend on them

= you get so used to them that you depend on them

你变得非常习惯了，以至于依赖它们。