But does there come a point at which devolving policy levers in the form of specific tax powers instead turns into handing one part of the UK what could be seen as an unfair competitive advantage over another?
The fact that attention spans have devolved in the age of the Internet.
Delhi's experiment with efficient public road transportation, in the form of the Bus Rapid Transit corridor, has devolved into a court battle that pitches the city's wealthy, car-owning minority against the majority of road users.
Once a city of capitalist aspiration, New York's economy has devolved into a plutonomy where, in 2007, financial services employees gained a remarkable one-third of all income, much of it in the form of bonuses.
Because of Brown and Hill's over-the-top trashing of the Congressional impeachment hearing, CNN's Election Center has devolved into the lowest form of "spin".
Mr Cameron is copying this gambit of centralising in a narrow sense to devolve in the broader one.
Gambling law is devolved in Northern Ireland but controlled by Westminster for the rest of the UK.
Public healthcare in the Philippines was devolved in 1992.
In 2011, as a result of a constitutional amendment, the government of Pakistan devolved the powers of the federal administrative structure to its provincial counterparts.
Uganda is one of few African countries that fully unbundled the electricity sector, devolved the role of government in the sector, and allowed private sector participation.
