I should read more before I type my replies. Under home reversion, the company would not kick you out if you did not keep the house in good order. Instead they would get the work done and add the cost to the amount owed on your death.
Bear in mind that evicting elderly people from their house is very very bad publicity and causes outrage when it gets into the newspapers and on the news. Bad for business and bad for reputation, so it is something these companies want to advise at all cost.
You need to remember that these companies are commercial concerns and expect to make a profit. Unlike ordinary mortgages, they are not getting interest or return on their money as they go but delaying receiving any of it until you die.
For example if the borrower is 75, they could live until 85, average age expectancy, in which case the company gets money and interest in 10 years time, but they could live until 105, so the company advancing the money could end up seeing no return of any kind for 30 years. Interest rates are low now, but in 10, 20, 30 years could be back where they were in the 1980s - !0% or more. They need to factor all this in, plus compound interest on the accruing unpaid mortgage interest.