Intel's big problem in their strategy is trying to protect their main cash cow, their high end CPUs.
Mobile was lost because they beefed up Atom way too late. They had a public presentation claiming that Atom and Core would maintain roughly 10x performance gap. When Bay Trail got the much improved but still anemic 4EU GPU, some were saying the original plan was just 2EUs, but decided it wasn't enough.
Kirk Skaugen, the Data Center executive at the time of Core said that to protect Itanium, the main x86 chips were held back and they won't do it again(referring to Atom). Yet that is what they continued to do, to this very day.
The reason the fragmented and bloated AVX512 system exists in the first place is because they tried to beef up their general purpose CPU performance in emerging applications to counter GPUs in HPC.
The reason only now they have a proper GPU is because their view was HD Audio but applied to graphics. Barely anyone cares about sound chip anymore and the integrated one is good enough for most. They must have viewed their own GPU with the same light and that is a competitor with their cash cow, CPUs.
Had they developed their GPU years ago it would have been a good base to build up AI acceleration on. They would have benefitted from the crypto boom too, and on and on.