I don't think most people would class Sweden as a "Big Country", but Italy certainly are.
In Europe, I think only France, Germany, Spain, Italy, England, are really what would be classed by most as "big" countries.
I think defining "big" is close to impossible but I see where
@Beebo is coming from. I briefly scanned the groups and came up with 12 countries I would expect to or not be surprised to see in the finals; Germany, Switzerland, Sweden, Denmark, Greece, France, Spain, Portugal, Netherlands, Italy, Norway, England. I don't know if all these sides have or will qualify but it wouldn’t be surprising if they do. We can argue if some other countries fit this group, they probably do.
Then we have sides such as Scotland, Wales, Belgium, Poland, ROI, NI and others who given a decent draw and campaign have a good chance of qualification. These aren't surprising either.
Malta, Gibraltar, Faroe Islands? That would be novel.
I'm inclined to agree with Beebo all the major or "big" countries should qualify and if they don't need to ask questions of themselves. It's no different than any other modern football competition. All have been repeatedly expanded to be more "inclusive." What this really means is more games equals more TV equals more money. Where do we find the cannon fodder to feed this while ensuring the "big" sides qualify so we can generate even more TV money at the finals?
As a consequence the fans get a meaningless qualifying competition which is of very little interest. What do I know of this week's results? I know England have qualified. I guess they played two games this week? I don't know who against or the results. I know Tuchel had a rant about the lack of Wembley atmosphere. ***
I am a genuine football fan, 60+ years of watching, but the endless dilution of all competitions into a largely meaningless procession is a complete turn off. My interest in the WC will start in summer 2026 and probably increase if England progress to the quarter-finals. Till then FIFA have made it all irrelevant.
*** a manager's rant left a bigger impression on me than his team's result. That sums up the modern game quite neatly.