I do not think that is necessarily a good comparison, although I understand the sentiment. There is a major problem in this country with a lack of innovative 'prime time' television; I mean if you look back historically on what was shown, shows like X Factor, The Voice, Talent shows in general are nothing new... Nor are chat shows and general entertainment stuff (the Ant and Dec Saturday night stuff).
It is catering to audiences, rather than trying to get audiences to 'evolve' their habits and expectations (in my humble opinion), and the fact that Top Gear was stale and when an opportunity arose to try something 'new' or even a slightly new format, the BBC opted to stay with what it new and try to replicate it.
I am not really in to cars, but Top Gear certainly became more 'entertainment' than serious car show; the mental bike racer (name totally escapes me, but an acquaintance made a documentary about the race he took part in? Guy something?) anyway; he seemed like the natural choice to be the new host. Knowledgeable, personable, and younger. The Top Gear image needed to change desperately from the 'old men down the pub chat', they have basically swapped Clarkson et al, out for a slightly younger equally as annoying (in a different way) imitation, who does not have the same background.
I still think the show needs time, I just think the worst thing is that it is a waste of a fantastic opportunity.