British comics adhered to the safer option of an exciting title that allowed them to choose which series they kept within its pages. Of course this meant shorter pages for all stories and characters, the risk that you'd get parceled in a series or character you weren't interested in, and puzzles if you were really unlucky.
There has always been a mix of generic titles and series devoted to the popularity of one character. The relative saleability of each has varied through the decades. Characters from DC and Marvel had to earn their stripes if they wanted to continue to appear. Jack of Hearts didn't survive his Marvel Premiere (other than to put in a lot of guest appearances) but various versions of Ghost Rider and a motion picture later he can be glad of one thing at least, that the Marvel Spotlight shone on him as he did his first stunt.
Neither is a title static in its application. The motives of British comics staff in creating Hotspur is clear enough but consider, if at all possible, the comparative resonance of X- Men in repeat mode and under threat of cancellation and X-Men is the biggest selling comic in the world. Also consider what difference there is in how we, as fan or reader, approach a title depending on the artist and/or writer working on it at the time.