I think Adobe started this trend. A box with "Ps" inside for Photoshop, "Lr" for Lightroom, etc. for all their products. An entire generation of web designers

I think Adobe started this trend. A box with "Ps" inside for Photoshop, "Lr" for Lightroom, etc. for all their products. An entire generation of web designers grew up with their heads stuck in the Adobe ecosystem, so this must look like the gold standard to them. At least Adobe made an effort to make their logos look like symbols on the periodic table.