I'm not sure that's the standard,  but I think if you plan for the biz to flop,  do not do a 3 yr lease option.
    Each contract is different,  and depending on the experience of the leaser,   there will be measures to ensure "something", that may have happened once,  will not happen again.
   I think it's normal to have a clause in the lease,  stating the payment in full is expected,  if certain circumstances are/are not met.     This could be 2 payments behind,  or general default on the payment schedule arranged at closing.    ReaD what you sign,  and remember,   if in 3 yrs, you don't have 35k, or whatever the agreed payoff ammount will be,   you (in some cases), start over.    You would sign a new lease,  for X yrs.,  and again, in X years,  payoff is expected.    
Some sellers will work with you,  and upon renewal of contract in first 3 yrs.,  allow those payments made,  to carry over.