Double prosperity

When travelling through these developing countries I often ask myself whether it is really possible for these people to improve their standard of living without it costing the developed world their purchasing power or their way of life?
Maybe... Just maybe it is possible it is possible... You see once all the essentials are paid for, the proportion of income that is spent on needs reduces and the proportion spent on services increases. Therefore there is more money to be shared around, more money to be spent, more money to be made. Malaysia is a great example of this, they have birthed themselves into the developed world and are now finding more ways to acquire each others expendable income by offering services that never would have existed while they were a developing nation... Even McDonald's is in on it... They're offering the service of 'double prosperity' these days!