They've been developing them for half a decade, and had some kind of base (even if crappy) with their IGPUs to start from. In my humble opinion, intel is getting way too much leeway with "it's just a first generation try". They started developing this piece of shit in 2017, when RX580 was a brand new release. They've screwed the pooch, even by the reasonably low bar set for a relative "new comer" into discrete GPUs.
People were wishing away "a debacle like the i740" when intel announced its re-entry into the gpu market. What we got is much, much crappier than i740. What people are forgetting with i740, is that it was actually very good value for money. People were disappointed because it sucked compared to the flagship accelerators, and because the drivers were buggy. But it was an extremely affordable 3D card.
This time around we got all the problems of i740 without the value for money. It's literally excrement. If this dung pile was a i740-type release, the A770 would be going for 180-200, tops.