Everyone says its profitable to steal blinds IP , which in fact is profitable but I'm wondering how much exactly profitable

lets say we enter 100 IP steals

out of that we wil get lets say 70 percent instafolds =70*1.5bb=105bb

30 times we wil have ppl call bet = out of which we wil lose lets say fold 20 since we are opening trash

so we lose there 20 x 3bb invested in raise =60bb

10 times lets say we simply c bet and win uncontested ( not to go in too complicated math but common scenario ) so 10 x we win 4.5 = 45bb 

total loss  approx = 15 bb 

average win on 100 steals = 90 bb

BUT

whenever we enter hand 30 times ( most of it with very trash range ) and blinds are passive as they usually are - we lose up to 2 minutes in hand and in checking

so we lose 40 minutes of play at least , in meanwhile we could be using to play good hands in good positions

im not using hud so i can't estimate win rate per hour , but i suspect we can stack of 1 person in 40 minutes?

making it win 100 bb :S

Iknow this is stupid question but just contemplating subject so i wanted to hear other ppls opinion