I live in Paris in I have been very aware of the old peach and raisin we used to have from neighborhood villages in East suburbs ( Montreuil is touching périphérique so just an arm away from Paris).
It was the 19th century. wethear could be cold like minus 8 for a few days in winter so yes thick wall protected them also from extreme cold winter waves.
But do not forget that,at that time, Parisian did not often eat peach or raisin.
I am quite sceptical that indoor farming or other (re)new trendy technique could ever produce mass market fruit we are used to have.
In-season, local fruit, is a million times better anyway. We’ve traded taste for shelf-appearance and the ability for fruit to travel from New Zealand to California. If people really want strawberries in January (and as a parent of young picky eaters, believe me I understand) they’ll just have to pay a carbon tax on it.
But do not forget that,at that time, Parisian did not often eat peach or raisin.
I am quite sceptical that indoor farming or other (re)new trendy technique could ever produce mass market fruit we are used to have.