Morocco is just where lots of french-speaking call centers are located. The industry generates a non-negligible part of Morocco's GDP and most of the clientele is from France. So yeah, Morocco may be right to be concerned by an eventual shrinking of the market.

The call centers themselves are in Morocco but the calls never come from +212.

If a legitimate French business contracts with a Moroccon call center, they will then of course follow French law since the French business is liable.

As for international scam calls, not sure what the situation is in France and what measures they have in place, but one relatively easy way is to block international callers from spoofing a local caller ID, which decimated these calls in Finland a couple of years ago: https://traficom.fi/en/news/obligations-regulation-come-effe...

So, this is specifically for telemarketing call, not scam call. In the context of telemarketing, it doesn't matter that the company call center is outsourced in other country. The company who contracted them are in France, trying to sell their business in France, they are responsible. So if you get a telemarketing call from RandoCallCenterCo S.A trying to sell you on BusinessABC Ltd., they have been contracted by said company to do so and BusinessABC Ltd. will be on the hook.

All calls at least appear with a Caller ID from France (+33). Are they really from france or just spoofing them is anyone's guess (not really, former French colonies in the Magrheb like Morocco make good money running call centers for French numbers).

My anecdotal experience is yes, most spam calls come from french numbers.

Is there a technical reason why phone numbers would be easier to spoof in North America than other places?

Anecdotally I’ve not heard as much about it being a problem in other places such as the UK.

In the UK, a lot of the calls were coming from India and vsrious countries in Africa. I think India has cleaned up its act, but it's prevalent elsewhere. The callers pretend to be UK-based but there sre a number of giveaways.