I've kept out of the Patak's sauce debate because, when I feel the need to use a commercial paste, I prefer to use Laziza pastes, but this morning I went to my local asian wholesale shop (which supplies all the restaurants around here), and had a chat with the owner.
He also owns five restaurants, and freely admitted that they use Patak's pastes - but only in the preparation of tandoori/tikka dishes. This was backed up by the presence of catering size jars of Kashmiri, Tandoori and Tikka pastes on the shelves (all of which I've noticed whenever I've been into BIR kitchens).
He assured me that all the main dish curries were made the standard way with base gravy and ground spices, and having eaten in his restauraunts I have no reason to doubt him.
I asked him why Patak's pastes were used for tandoori/tikka dishes, and he said it was simply down to convenience and, given the huge quanities of tandoori / tikka marinades made each day in his restaurants, it was also about consistency.
He couldn't understand what the fuss was all about. "It has been this way for many years", he said, adding that tandoori and tikka dishes remain amongst the most popular on his restaurants' menus. "Customers like them. Why should I change something that works?"
My take on this whole 'death of the taste' is that, as in all types of cooking and cuisine, it is the skill of the chef that creates and determines the taste and quality of the dishes. If your local restaurant/takeaway isn't delivering the taste, look to the chef and his methods.
I know of two restaurants round my way that recently saw business plummet after their chefs were poached. The food went from stunning to bland literally overnight.
Of the five restaurants owned by the above mentioned wholesaler, I only bother with a couple of them. Why? because those have the best chefs.
Anyway, that's my take on it. It's not anything to do with pastes, but chefs. Always has been, and always will be...