"Widespread availability" means that something is easily and widely accessible or obtainable by many people in various places or situations. Full definition
Further, these studies would have to evaluate the effects of more widespread availability of food, particularly food that's high in fat and sugar. (geneticliteracyproject.org)
It became concurrent with widespread availability and access to education (especially college education) throughout the country for both men, and women. (politics.stackexchange.com)
Other factors include the fact that e-readers enjoy more widespread availability in the retail sphere then ever before. (goodereader.com)