There are a lot of tech incubators in the Paris area.
On the other hand, French people/VCs will wonder what can go wrong whereas in the US they look at what can go right. There are enough hurdles to face when trying to build a global tech companies as a solo founder and it can definitely make a difference.
Europe progressed quite a lot and now can be considered a matured one, however compared to US and sophistication of investors, deal-making and deep-tech it is still a young adult compared to the season 50 years old American veteran with scars and experience.
APAC still a teenager in that sense but with a lot of spotlight.
Different cultures, mentality, support system and also chances of making it in the end. I feel like if you have a possibility to be close to the valley, your chances of making it are probably 50% higher than anywhere else in the world and that route actually makes sense.
If you're a startup in Europe you can forget about the scale you can experience in the US and you should dedicate someone in your team to apply to every European grant out there to survive.
The successful European founders I know invested the equivalent of a Silicon Valley round of their own money (or friends / family / great contacts from networking) before seeing VCs