Yes, that's the thinking behind restaurants. Eating is necessary ...
It's reasonably necessary to eat a nice, decent meal. Sundays are supposed to be a joyful dedication to God, and if you're eating a warmed-up can of PorkNBeans, you'll likely not get there.
And to have a decent and nice meal, somebody somewhere has to do the work, whether it's you or someone else.
Maybe there could be a symbiotic relationship where the Jews keep their restaurants open on Sundays, and the Goy keep ours open on Saturdays, and ... problem solved. 
The point of my Reply #27 was that most of the time it isn't necessary to resort to "a warmed-up can of PorkNBeans", it is possible to eat a nice, decent meal without someone having to do a lot of work on Sunday.
To expand on that thought, there is a traditional (though not traditionalist as that term is understood on this forum) Benedictine Monastery in Sprague, Washington (population 540) which offers a 1962 missal High Mass in the parish church every Sunday at 10:30 AM. The closest family attending that I know of lives 30 miles away, most travel much further, it is an 87 mile trip one-way for me. It is understandable if one would need to stop for a meal, and I sometimes do, and sometimes bring along a sandwich and salad. On the third Sunday each month the local community hall is reserved (the parish doesn't have a hall) and there is a potluck. There is an array of artisan breads, cold cuts, cheeses, salads, and desserts, all of which can be prepared the day before. I've discovered that if I wrap my crock pot in an insulated blanket the food will still be hot after Mass, nearly three hours after I first unplugged it. There are ovens and a microwave to warm a casserole dish. There is always plenty of food, so visitors who didn't know about thepot luck can stay, they don't need to go find a restaurant.
In the Tri-Cities of eastern Washington (Pasco, Kennewick, Richland) on the 4th Sundays a Ruthenian priest travels 150 miles from Spokane to offer the Divine Liturgy at a local parish church in the afternoon, with a potluck following. There is always plenty of food, so visitors who didn't know about the pot luck are invited to stay, they don't need to go find a restaurant. The fare is sumptuous and can be prepared the day ahead.
I'm not saying that it is wrong to take a commercial meal on Sunday, and we might recall our Lord's words in St. Mark chapter 2:
23 And it came to pass again, as the Lord walked through the corn fields on the sabbath, that his disciples began to go forward and to pluck the ears of corn. 24 And the Pharisees said to him: Behold, why do they on the sabbath day that which is not lawful? 25 And he said to them: Have you never read what David did when he had need and was hungry himself and they that were with him? 26 How he went into the house of God, under Abiathar the high priest, and did eat the loaves of proposition, which was not lawful to eat but for the priests, and gave to them who were with him? 27 And he said to them: The sabbath was made for man, and not man for the sabbath. 28 Therefore the Son of man is Lord of the sabbath also. Still, it is also possible to have a nice, decent meal on Sunday without someone having to do a lot of work, the prep can be done the day before.
I'm more perplexed by how eating or exercising on Sunday is a matter for the anonymous form
