Why would IBM not also benefit from a consistent design language? Irrespective of what people might think of their products, they are involved in a wide range of business sectors (services, desktop, mainframe, AI, etc.) and I would have thought that consistent typography would help to give them a more integrated feel.
Sure there is an element of "me to" about this - Google, MS, Apple, even Oracle and Atlassian have design languages - but as someone with a general interest in typography I thought this looked pretty good.
Of course wanting to create your own font is another level, but there's nothing wrong about wanting to choose the font on your site.
Typography is a fickle, subtle thing that can influence people without them being aware of it. While on HN, folks may pretend to prefer stark naked HTML, that doesn't fly with the general public.
IBM decided it needed a refresh in that area. Good for them and good for the graphic design professionals that did the rather impressive work here.
Plex was introduced a few weeks ago internally with considerable uptake. Intranet articles and corporate comms look much nicer now :P
IBM also produced the Carbon Design System which influences most of their product offerings (most notably on IBM Cloud/Bluemix) http://carbondesignsystem.com/
IBM building its own fonts to polish the nooks and crannies of their brand identity may well be such an instance where it is replicating behavior from the late 70's and early 80's of doing everything under the sun. Imho it should clearly not be a priority for them right now.
I can see why companies like Apple and Microsoft would want to be involved in making fonts, they make their bread and butter by creating warm-fuzzies and having a consistent design language; IBM though, less so?
Genuinely interested to hear others thoughts.