If you studied history for a bit, then you probably know that the base of the walls in massive 19th century buildings were up to 3 feet thick or even thicker and the reason for that was due to the big loads that had to be carried and the low strength of the joints.
However, these days, building strong masonry walls is possible by using mortar and high strength bricks, yet in most cases it seems that a framed structure will allow a lot more freedom in the facade's design, but also when it comes to interior planning.
If the structural wall is made of reinforced steel or concrete, then it can easily support the roof's and floors' load, including that of the non-load bearing walls.
Non-Load Bearing Walls and their Stability
Load bearing walls need to be reinforced very well in order to prevent overturning and also tension developing. Not only that, but due to the fact that the walls are connected with one another at the roof and each floor, it makes them act as a single wall that supports the entire structure. When it comes to non load bearing walls, they don't have this advantage.
If a brick wall were to be supported on a shelf angle or concrete beam at each floor level, the architects would need to play it safe and ensure that the load is not picked up by accident by the lower wall from the floor above.
Soft joints are generally used at the top of each wall in order to remove the restraining effect of the upper floor, but also to proven the transfer of vertical loads. In this particular situation, the wall panel is going to be freestanding from its base. On the other hand, if the wall is going to be constructed as an infill between columns, it's certainly going to lose support at the columns' sides.
In order to ensure these problems are prevented, architects came up with a wide range of special ties. The way they work is that they restrict movement in one direction and allow it on the other one. In this case, the use of a cavity wall will provide more stiffness compared to a single leaf wall, but it does require support back to the structural frame. Extra support can be easily provided by reinforcing the brickwork.
Brick Veneer Walls
When it comes to exterior brick walls, their best advantage is the fact that they are durable and look good as well, regardless if we're talking about a brick veneer or a cavity wall over a framed interior leaf. For instance, when it comes to the internal walls of commercial buildings, they generally use plasterboard on steel studs, while for the exterior leaf of perimeter walls they use brickwork. Stabilizing the brickwork in this particular case is done by using wall ties to the steel studs.
On top of that, it seems that using a brick veneer makes it possible to add thermal insulation between the studs which is a lot simple compared to insulating a brick cavity wall. However, compared to them being made entirely using brickwork, the durability of the internal walls is going to be lower.