You see the funny thing? I actually have a platform I am developing and hoping to evolve into a startup. Lasgidi was my first location choice some months back. . . But after I have suffered and had a rethink, I decided to stick to Ibadan. Why Ibadan? Well, I grew up here (or there cos I am not at Ibadan now). I know my way around... I know how to reduce costs. I know how to prevent burning out.
Second: Its way cheaper! Believe me.... From Mokola to Agodi to Dugbe, to even Bodija, I can get office spaces not too expensive. Internet for my company? psst, I have Smile 4G coverage (Ibadan was a pioneer city in Smile 4G). . Basically running my startup would be way cheaper
But to answer your question heads on, I will say its the hype (or maybe not) around Lagos (think 'Yaba'). Yea, that is the general idea I can think of.