This can't be underestimated. Not only is The Premier League a much bigger draw than ever it was before, but Aston Villa are a very different beast to what we've been in the last 20 years. You can't use anecdotal comments about what happened 5 or. 10 years ago to judge the present day.
And I see no reason why we'd regress, these owners are here to stay. If Emery goes they'll go out and get another really good manager. We're going to be around the top of the league, in Europe and probably winning the odd cup or two for the foreseeable now. And all the while interest and probably memberships and season ticket waiting lists will be growing.