What is the rising trend of 'boommates' in the US?

A growing number of baby boomers, people aged 65 years or above, have started living with intergenerational housemates in the US, leading to the trend of 'boommates'. Older people are choosing shared housing arrangements amid surging housing costs, inadequate retirement income, as well as to fight loneliness. Some websites are now allowing boomers to find potential roommates such as students.