This study provides a comprehensive analysis of the temporal and comparative trends of the upstream and downstream portfolios of space companies. The research sectors initially skewed towards the upstream sector. However, since 2000, the downstream sector has seen an exponential surge, becoming dominant. Most space companies studied show a higher cosine similarity with the downstream sector. Interestingly, a shift towards the upstream sector has been observed during 2020 - 2023, likely due to the rise of private space companies that rely on the support of national and international space agencies. In a broader context, the study reveals interesting dynamics when comparing the strategic focus of different space entities.