Economists like Gerard Minack and Ken Henry have highlighted that Australia's net investment spending has not kept pace with its rapid population growth, reducing growth in per capita capital stock. This capital shallowing is identified as a leading factor in the decline of Australia’s productivity growth. Minack points out that net investment spending, particularly business investment, is alarmingly low, contributing to diminished productivity growth.
The implications of this trend are profound for both consumers and the broader economy. With more people but insufficient investment in the necessary infrastructure and business capital, productivity per worker declines, which can lead to a stagnation in living standards. The imbalance is reflected in various sectors, from public services to housing, where insufficient investment exacerbates congestion and costs. This challenges the notion of sustainable growth, highlighting potential negatives of a high immigration policy without corresponding capital investment.
Looking forward, Australia's ability to balance its population growth with corresponding investments will be crucial. The 2024 Population Statement forecasts an increase of 13.5 million people over the next 40 years, driven by high levels of immigration. This stark projection underscores the need for enhanced planning and investment strategies to prevent further capital shallowing. Economists suggest that without a recalibrated approach that aligns immigration with investment capacity, Australia's living standards are at risk of deterioration.
Beyond basic infrastructure, boosting business investment and embracing innovative technologies is essential. With projections indicating that Australia's population could rise significantly, replicating the housing, infrastructure, and business successes of Sydney, Melbourne, and Brisbane seems daunting without significant policy adjustments. Economists advocate for measures to limit immigration in line with Australia’s capacity to expand investment to support productivity growth.
