We have an excellent specialist shop. They are local, independent, affordable, but not cheap to the point of selling the crap usually found in Tesco Metro. They know their wines. You walk in, tell them what you are having for dinner and they provide a recommendation they have actually drunk. Most importantly they are not snobs, they will welcome a Lambrini drinker (although they won't sell the stuff but would know where to start with them) as much as a real wine collector.
I don't think I've seen an Oddbins for 15 years here down south but if they were worried their competition was Tesco to the point they sold the same stuff then what's the point going to a 'specialist'. The owners of my local shop know what's good for them, they have one branch a good customer base, no further great plans for expanding into every high street (in fact they aren't even on our high street but down a side road some distance away) but have online presence and nation wide deliveries if you want.
Stand out, be different, or fail.