Certainly it is possible, but you would need to shop around for rates.
However, it introduces a lot of unnecessary risk and considerable cost. What portion of your retirement income would be supported by stock sales? (Vs. Pension / fixed income / cash?).
Margin loans are callable and fluctuate with the market making them more expensive in volatile times. You rates will also depend on your principle holdings.
Also do to currency risk I believe the broker may favor Japanese equities/etfs over foreign ones.
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I caution against this approach.I'm currently holding cash because I expect a big recession to hit this year.
Source: https://www.blackrock.com/us/individual ... -va-us.pdf