It also suggested that the strong scale and network effects exhibited by that infrastructure can give rise to economic rents and warned that leaving its provision to corporate interests rather than giving a lead role to public policy would probably skew outcomes in ways that would be neither inclusive nor sustainable, particularly in developing countries. There is consensus among economists and economic historians that infrastructure has often been at the centre of the transformative shifts in the economy over the last 250 years, beginning with the canal network in Britain as its industrial revolution got under way. There is also broad agreement that many of these capital-intensive infrastructure projects - highways, airports, harbours, utility- distribution systems, railways, water and sewer systems, telecommunication systems, etc. -