No, iGPUs are not marching. nVidia's GPU business is bigger than AMD's CPU business - revenue and margins.
Nvidia is not bigger than AMD (in the PC market). They may make more profits, sure. These results show clearly that AMD as a whole sells more graphics chips in the PC market than nvidia. Amd igp, apu, and dgpu is higher in volume than nvidia dgpus.
Now this is kind of important because its very clear once you throw in Intel, who only sells igps. The igp market is likely 3 fold larger. And yr over yr, Q over Q, Intel is gaining. Igp is marching.
There is simply no way for dgpu to catch up now since nearly every system with a dgpu also gets a count in the igp per Jon peddie methods. So even gaming laptops and desktops which use dgpu as primary video will most likely have an igp and Jon peddie counts both of these in their overall graphics report. Anytime there is a boom in PC sales, or an increase the dgpu stands to loose.....unless every single PC in the boom is gaming/dgpu oriented but in this unlikely case the dgpu can only hold on to its market share. Those systems count as an igp as well. So its a loosing battle.
It kinda skews the appearance. Right now over 30% of PCs are using dgpu, this is a large portion and in the history of the PC, its very very respectable. But the Jon peddie report kind of buries that. Its because just about every dgpu system also counts another igp in the overall graphics market.
So dgpu is still very popular as well as PC gaming. But igps are marching and there is noi thing that can slow this down..
Unless Intel and and stop embedding graphics on their CPUs. Any time their is an uptick in PCs, Igps have no choice but to march on.
As for gaming, dgpus are still highly preferred. But the days of crap dgpus just for video output, they are gone. Igps have made them obsolete