There have been services to help elderly people get their bags in and out of the car at the airport for literally decades.

As for "at their home" - if you think that the cross section of elderly people who:

Can't lift their bag into a car.

Travel frequently.

Have no friends or family to help.

Have no neighbors to help.

Don't live in assisted living.

Is enough to sustain the industry, I think you're in for a rude awakening.