Buildings & Plastic Corsets - Retro-engineering Against Earthquake Damage

While new buildings can be designed to withstand severe earthquakes, they come with a price-tag: foundations, materials, design, all costs that don't come cheap.

For existing buildings the main response has been retro-engineering - placing additional supportive structures around and within buildings to improve their resistance to the ground shaking. However, these structures are expensive and restricted to countries with the wealth to enhance building-resistance.

Given that 75% of deaths in earthquakes are from building-collapse, is there no solution for those communities in earthquake-prone zones with little available finance?