Cooperatives tend to be more stable than traditional firms, but they are both harder to start, and aren't Communist. OP is confusing worker-owned private property with the abolition of Private Property, Communists don't focus on worker cooperatives because cooperatives retain petite bourgeois class relations.

Rather than creating a society run by and for all collectively, cooperatives are a less exploitative but still competition and profit-driven form of private business. Communists wish to move beyond such a format, even if we side with cooperatives over traditional firms when available.

I don't agree with this. Shareholders extracting value from a company is arguably more of an 'inefficency' than treating employees fairly. Well treated employees provide a benefit to the company while shareholders purely remove resources.

I have no data to back up my claim, just logic, so I could very well be wrong.

I saw it happen with Walmart, Ace Hardware, Pizza Hut, Lowe's/Home Depot. We used to have independent supermarkets too, who set their own prices based on local conditions. I live in an area where the supermarket in a nearby town (it's really a village) often has lower prices on produce and meats. The big national brands cost more, and this store doesn't get bulk discounts like Walmart, HT, and Kroger! The problem is I still have to go a few towns over to get decent coffee because Folgers, Maxwell House and Staryuck isn't it, so when I get a ride, I have to buy extra and freeze it. The local independent store doesn't have as good starting pay or benefits, though, but without their store, many of our older population would be in serious trouble. An elderly man kept me for some time in the meat department of our chain store because he said he was ashamed to be looking at low quality beef at those prices, when he used to farm and hunt his own. Years of farming to feed our country left him with hands that don't work the way they used too. I didn't buy their overpriced products, and felt bad for someone who destroyed their body for people who largely don't even consider that nature gives us her body and blood for us to eat and drink, and from showing, weeding, irrigating, harvesting, processing, packaging, shipping, stocking, dusting, sweeping, waxing, checking, the individuals who suffer and destroy their bodies to get it to the table.

I was in another independently owned grocery a few towns over by happenstance to pick up a few things while accessible. In less than 15 minutes, because I didn't know where items were and asked, three different employees told me to wait, they'd be right back. I guessed they were asking or making sure. Each returned with the specific item I wanted, to save me steps! Again, every item but one was less expensive than the chains, and I am guessing they can't compete with chain grocery starting pay, either.

Interestingly enough, the employees do get a small profit sharing incentive.