The circuit has boasted sell-out crowds, with some 140,500 fans turning up on race day this year for a grand prix that is home for now-five times world champion Lewis Hamilton and a majority of the teams.
Bratches said the sport valued and wanted to keep the ‘heritage races’ – such as Silverstone, Spa and Monza – and recognised their importance to fans.
“But we are a business,” he added. “We are a public company and we have a lot of stakeholders and shareholders and we’re trying to marry what’s best for fans with running a successful business.”
Formula One has 21 races confirmed for 2019, but Germany’s Hockenheim will also be out of contract at the end of next season along with Italy’s Monza and Spain’s Circuit de Catalunya.
Vietnam is the first race contract negotiated by Liberty media since the U.S.-based company took over Formula One’s commercial rights in January 2017 and ousted long-reigning supremo Bernie Ecclestone.
Bratches said Hanoi fitted the new vision of the sport’s owners, with another street race in Miami also in the pipeline.
“One of the things we have been intensely focused on is extending grand prix racing to iconic cities, in downtown areas, where we can best engage fans,” he added.
“Most of our grands prix are currently half an hour to an hour outside cities, so this race in Hanoi fulfills one of our preliminary goals – an iconic city hosting racing on a potentially thrilling street circuit.
“Vietnam’s concept of what grand prix racing should be about matches our vision for the sport.”