While lower interest rates and asset purchases do tend to support asset prices, and higher equity prices tend to benefit higher-wealth households, higher housing prices tend to have the largest effect on households in the middle of the wealth distribution.
The effect of asset price increases are also greatest for people with a bit of leverage against their asset holdings; they tend not to be those with the highest wealth. In the Long Run In the short run, then, the answer is clear. It is the job of macro policy to support growth by encouraging sufficient demand to employ our nation's productive resources.