Yep, fair point. Was trying not to be longwinded and cut out key details.
The Scottish economy did benefit in the 19th and early 20th centuries from British heavy industry but that became a millstone around their neck at the end of the 20th century as those industries died. If it had been an independent country the Scottish economy would have been more balanced, as Scotland was highly educated and with a wealth of niche industries, but ended up getting many of UK's dirty, polluting, heavy industries and then having them fail.
Denmark, however, wasn't a smaller part of a larger country. Rather than be a regional hub for a particular type of industry, it leveraged international cooperation as an independent nation to grow trade, joining the OEEC/OECD, IMF, GATT/WTO, and from 1972 the European Economic Community, later European Union. Now it's a well balanced service economy (about 80%) where they earn about 52,000 pounds per capita compared to Scotland's 32,000 pounds per capita.
