Based on historical trend and three generations of the RTX x70 line being at 8GB VRAM, the RTX 4070 should have launched with a 256-bit bus and 16GB memory right alongside the 4080. I don't know what Nvidia is thinking these days, but they are confusing the consumer more and more with each new generation - and will there or will there not be a Ti series variant for mid-range? I wonder what they'll turn upside down with next year's RTX 5000-series!
Munny, and keeping shareholders happy? Those are the #1 goals of a publicly traded company, right?
A confused customer is more likely to overspend, so more money for them.
Arc and Radeon are currently playing catch up.