What the difference:cell phone network vs data services?

[snakenobi]

I wanna know,why can't every cellular phone network operator jst charge for data services?

every SMS uses only 1-10kb of data

 

i get they are against voip but they could do it themselves

 

also how does the cellular phone network work,as in the cell sites or the base states comunicate with other cell sites or base stations or do they communicate with satellite?