Heat 2 tablespoons oil in a pot and cook pork ribs until browned, about 5 minutes. Transfer to a plate. Cook sausages until browned, about 5 minutes. Transfer to the same plate as the ribs.

Drain off some of the excess fat. Reduce heat to medium-low and pour in remaining olive oil. Add onion and 1/2 teaspoon salt; cook and stir until translucent, about 5 minutes. Stir in garlic and cook until fragrant, about 1 minute; make sure not to burn. Pour in 1/2 of the red wine and scrape up any browned bits off the bottom of the pan.

Add tomato paste, oregano, and red pepper flakes. Stir until paste starts to darken, about 2 minutes. Stir in remaining red wine and water.

Add tomatoes and their juices, crushing by hand as you add them to the pot. Season with basil, remaining salt, and pepper. Bring to a boil; reduce heat to a low simmer. Taste and add sugar if sauce is too acidic.

Return ribs to the pot. Simmer, partially covered, adding more liquid if needed, for at least 2 hours. Add sausages back to the pot for the last 45 minutes of cooking. Add fresh basil during the last 15 minutes of cooking. Discard bones before serving.