Choosing to work for a corporate entity like WalMart, EyeMart, etc.. either as an employee or an "independent" lease holder.
A partially justified belief is that initial income out of school will be higher than working for or opening a private practice. Long considered the easy road, but it has a lot less potential for growth.
Nearly every income survey shows that the wealthiest OD's are in private (usually group) practice.
Going commerical is the only option for many new grads since good opportunities are rare. My advice for success in optometry is still to buy an established practice from a retiring OD (getting harder to find).