Oil Can said it well.  At least a couple of dozen sites that I used to frequent daily if not hourly have all gone this way.  No amount of user feedback changes things.  The decision is made, and it has never been undone in my experience.  On a bigger screen, it is always the same -- large grid layout with lots of whitespace and stock images that require lots of scrolling.  It is like looking out a window and realizing that all you can see is just two feet away.

Bottom line is that nothing these days is optimized for a larger screen, which is difficult to understand particularly for some sectors such as financial websites.  While a website may get more clicks appealing to smartphones, I doubt that anyone makes money investing from a smartphone.

The only response that I know is to move on, even if it is getting hard to find compact, well laid-out websites.  For investing, that seems to require using brokerage platforms.

I suspect that it is because the design has gone the way of most other websites -- a grid system with everything very spaced out requiring the user to scroll more making the PC experience comparable to a smartphone (i.e. less information on a single PC screen).  Lots of whitespace, which designers like and advocate, but which adds questionable value.  I also suspect taking the familiar and rearranging the layout may not add value in the eyes of some users.