The graph is an area chart titled "Investment Gap for Physical Capital in the Healthcare Sector." The y-axis ranges from zero to 4 and plots the enterprise value per unit of physical capital minus one. The x-axis spans the years 1975 to 2017. In 1975, the rents attributable to physical capital were 0.1, intangibles were 0.3, and rents attributable to intangibles were 0.1. By 2017, these values were 1.3, 1.1, and 1.8, respectively. Note: The “intangibles” category in the decomposition is the presence of intangible capital in the value of the firm; the other two categories are due to the presence of rents in the value of the firm. Source: Crouzet N, Eberly J. NBER Working Paper 28988, and forthcoming in Journal of Finance