Formula 1
The FIA has long called for more engine suppliers and that is how Honda entered the fray in 2015. If Honda would have exited Formula 1 completely, that would have sent a very bad message for potential companies like Aston Martin, Porsche, and Cosworth, who have reportedly shown interest in entering F1.
If McLaren-Renault do end up being competitive and challenge the likes of Mercedes, Ferrari, and Red Bull, it will provide healthy competition, which is the need of the hour in F1. This is in contrast to years before 2017 when only one team – either Red Bull or Mercedes, at different times – completely dominated the standings and the others barely challenged them. This might bring about a change, which will be beneficial for Formula 1 as it looks to gain more fans and provide more competition and entertainment at the front end of the field.