I respectfully disagree.
I was very tempted to go into retail despite all the cons. It's obviously going to be easier when you start with a huge amount of money before hand, but unless you made a fortune elsewhere or inherited money this will likely come from the form of a partner(s), a loan, or investors.
Owning a bike shop can be highly rewarding and highly profitable IF and only if you bother to learn the basics (and hopefully master several) of the essential aspects to owning a business.
As a Hubber mentioned in a previous post this is things like (but not limited to)
Some stores have become successful despite having little to no understanding of some of these important aspects of business, usually as they were founded before the necessity for such skills arose (how many bike shops do you know with no webpage... in a day and age where a business is expected to have a social media presence across multiple platforms as a minimum)
Personally I feel these stores will struggle to stay relevant in an increasingly demanding market unless they learn to adapt soon...
The stores who have mastered all of these aspects as well as adhering to some of the aspects raised in my previous post are the ones who will not only survive, but are currently thriving in our market.
It can definitely be done