Yes, you could there are a handful of small boutique shops from established analysts (sometimes a single analyst) although its super rare. The sell side is a tough business and there are increasingly fewer analysts across the industry even at the big firms with the smaller ones mostly folding.
The majority of the sell side exists with the bulge brackets. So Citi, GS, MS, BAML, JPM and others all have teams of industry and asset class specific sell side analysts (High yield metals and mining, equity aerospace and defense, etc). As a trading client of those banks, you gain access to the research platform and higher levels of sales and trading gain higher levels of access (they loop by your firm occasionally, pick up the phone for you, etc). So they are a cost center extension of the sales force. Hence the difference in motives and bias towards popular opinions. Their revenue pool is split among the various sales and trading functions based on commission. Mid sized firms include Stifel Nicolaus among others whereas smaller shops might include Wolfe Reserach, Sidote Stern Agee, etc. Smaller shops tend to get paid directly for research access, which for a lot of firms is tough to justify, hence the pressure on the business model.
So with that in mind, if you reread the first post, it should be relatively clear how the function of the roles could change,. let me know if further question.