From my experience whenever I have to install a piece of software I'm presented an end-user license agreement (EULA) in the following way:
Specifically the EULA is a long text in legalese and I actually need to read that text - it governs under which conditions I can use the software. That long text is squeezed into a tiny textbox that is located on a windows with a non-adjustable border so I can't make the window larger and have a larger textbox - I have to either copy-paste the EULA into another program and read it there or read all the text through this tiny gun port.
Is there any reason behind this widely adopted and often replicated design?