I worked in a UK computer shop from 1979 until early/mid 1992.
One of my jobs at the computer shop I worked at, was to evaluate new products including computers. We we offered some of these and although they are unknown in the USA, they are well known, but rather rare now in Europe and rarer in the UK. By the time the DAI appeared on the scene, similar, high performance 'home' computers were established. The nearest UK equivalent would be the Acorn BBC computer with it's 2MHz 6502 and EXCELLENT FAST and highly structured BASIC with built in assembler.
Here is a playlist of demo software.
https://www.youtube.com/c/hirudov2d/search?query=dai