I think you would need to count how many airlines were started in the UK and over what period of time. Then note how long each carrier was active for. Then collate the same data for the countries you wish to make the comparison with. Countries will need to be categorised by population size and the era in which the companies were operational, taking account of such things as recessions and boom periods. It may simply be that more airlines were started in the UK and the soze of the population might not have supported that level of optimism - but we currently have no means of knowing.
Further, Thomas Cook from it's first iteration, has been in business for 150+ years and very, VERY few companies make it past 100 years. [ps I see The Guardian stating they had been in business 178 years]