At risk of speaking ill of the dead - it was time for a change.
Rose and Crown design/programming ideas were stuck in the 1980s, lots of the clientele were stuck in that era too. As they aged out and the times change, the place didn't reinvent itself fast enough. It was one of the few remaining "driving bars" in the area where the main entrance fronts onto a large parking lot down the alley. One of the classic counter-intuitive parking examples - a bar that celebrates drinking while also encourages driving. All in a neighbourhood that has seen explosive, pedestrian-focused growth.
Meanwhile the entrances to 4 Street and 15 Avenue were walled off, with an impermeable raised patio. While some people like the pseudo-privacy of sitting behind a big wall between you and the street, it limited the bar's options to reinvent itself as a destination. As a pedestrian walking by daily for over a decade, it became pretty easy to forget when passing by - appeared closed nearly all the time thanks to an unwelcoming frontage. As a friend once described it in the early 2010s "just a boring old person's bar with bad beer in a cool old house".
It's also a good example of the uncanny "meh" valley that many 1980s/1990s Calgary Irish/English bars fall into - not cheap or quirky enough to be on the dive bar circuit, not new enough to be on the trendy new bar circuit, food was not good enough to be on the food circuit, beer was not good enough to be on the craft beer circuit, not popular enough on the live music circuit. In short - just increasingly "meh" and forgettable except for the shrinking nostalgic crowd for a bar of their younger days.
From the main streets nearby, its a very poor design for a bar looking for patrons walking by - nothing about it screams "you should pop in here for a drink and a good time". There's no way to know if it's busy or popular from the street. The entrance is tucked way around back, down a muddy, dirty alley. Below, neither of the two visible entrances are the actual entrance. Planters haven't been maintained in years with plants and cheap retaining wall/gravel was used during the patio redo from mid-2010s.
Rose and Crown had it's time and it's fans - and a long run which should be celebrated for sure, bars are impossibly hard to operating through ever changing consumer tastes and economic conditions. Unfortunately being around for a while in an old cool house proves to eventually not be enough. Time to move on either as a more neighbourhood-focused old house bar or a redevelopment. Anything that improves the street frontage and takes out the oversized parking lot would be a major win.