I wouldn't call APEX 15 'fragile'. ;) Check out this new review.
Meanwhile: why don't we see any offerings with AMD "H" Series CPU and RTX 2070 and up? And why don't we have RTX 2080 in APEX 15 with AMD Desktop CPU?
In my humble opinion, it's a combination of:
- Limited Support from AMD (they have good silicon but the R&D manpower is stretched thin)
- Testing the water/market first. While tech enthusiast in most regions might be super excited about AMD and multicore performance, but Joe Sixpack or [insert your random commercial IT decision maker] might think differentlty
- Lack of experience dealing with AMD's power management
- Lack of experience dealing with AMD's memory support, drivers and firmware
- Unclear supply/allocation situation on key components (although this applies more to mobile parts, not Desktop)
- Some people (e.g. Igor Wallossek from Igor's Lab) even say that AMD does not have good power balancing features, especially if you want to cool CPU and dGPU with combined heatsinks and you want to manage the CPU power consumption while a GPU with more than 115W is drawing 100%.
Give it some time, we'll see what happens. :)
Cheers,
Tom