Well.. in Brazil, general acceptance of a new technology takes time and new technology are usually much more expensive... In the private sector brazilians are very price-sensitive, especially in the mid-low end market.
We have the most expensive stuff in the world (and I mean general...), importing taxes in Brazil are very very high and can raise the cost of the product by figures as high as 80%. New technology tends to be more expensive because they are just new (even if they don't cost more.. just like a fancy car here can be much more expensive just because it is prettier, even if its cost in USA is lower than regular cars, take a Camaro for example that can cost 3 times the price of a ford fusion while in USA both cars has the about the same price...).
In Brazil products are taxed in the whole chain of distribution and added to the price which significantly increases the price to the end user so it is taxed when manufacturer sells to distributor, it is taxed when distributor sells to integrator, it is taxed when integrator sells to end user... The the final price of a product, depending on the product, taxes could constitute 60-70% of the price (Of course it depends on the product).
So you can guess why Brazilians are very price-senstivie and will usually go with the lower price, especially the Private sector...
As for the Public sector we rarely see any tender that is written for analog or HD analog, be it in a city surveillance or any public building.. it is mostly all IP..