Christian Horner has explained a stumbling block that could prevent new teams joining F1. Since 2017, 10 teams have participated each season, and share the pool of prize money between them.
Therefore, if another team were to join those already involved, each team would receive less prize money. The likes of Andretti Autosport, the American brand owned by former McLaren F1 driver Michael Andretti which races in IndyCar, has stated his desire to join the sport in the past.
Andretti were linked with takeovers of both the Haas and Alfa Romeo-Sauber teams late last year but were unable to come to an agreement after talks broke down. Horner would be interested to see the numbers of teams in F1 expand, but is wary of the existing teams being impacted financially.