The OP is raising a good point that will be increasingly common in the years to come: people aging who are childless and have no family and friends, of, if they do have children, are estranged from one another.
Assisted Living is an option, but only If you have the money. ALFs, as they are known as, cost anywhere from $4,000.00 to $10,000+ a month and the higher end ones require a $200,000 deposit or more.
The OP ostensibly lives in Canada so he is in better shape than the average American given the Canadian social safety net.
States and local communities do have organizations that assist the elderly, like Meals on Wheels, but many are staffed by volunteers. They do a good job, but they are not a substitute for having someone close to rely on.
I won’t even go into the topic of the rising rate of elder abuse.
The issue of the elderly living alone is an issue that will be of greater and greater concern in the years to come.