I dont think its only to do with pitches. If that was the case Pakistan wouldnt have Waqar, Shoaib, Sami, Akram , Imran etc. Typically fast bowlers are physically strong and athletic men and they have to be groom up at an early age. One cant be a 25 year old and suddenly start bowling fast, his body simply wont support it. Food habit also plays a part, thats why Pakistanis are physically fitter and stronger than Indians and us.
So BCB cant have a quick solution for this problem, they can organise camps and talent hunts for under 16s/18s and if they spot some good ones, train them well /send abroad to MRF etc. As someone proposed already, divisional stadiums should have bounce or grass on the wicket for seamers. All these steps can help us gradually getting more fast bowlers.
When The Going Gets Tough, The Tough Gets Going.