Do you apply reverse charge to B2B customers?

I can’t get my head around letting B2B customers insert their VAT ID and thus apply the reverse charge mechanism.

IMHO, the reverse charge mechanism had sense before having the VAT MOSS scheme, otherwise you would have had to register in every country.

Now, with VAT MOSS, I do not see the advantage of applying reverse charge to B2B customers, if you’re already selling also to B2C.

So, what would happen if I treat a B2B customer as a B2C sale?

My price for a e-service subscription is let’s say 20€ including VAT.

The VAT % included in the 20€, is calculated after checkout based on the 3 pieces of evidence (IP, address country, card country).

The B2B customer, most likely does want to have somewhere written on his invoice his VAT ID number so he can claim the paid VAT back.

• The question for me is, am I legally obliged to actually apply reverse charge once the valid VAT ID is on the customers invoice?

• If I am obliged to apply reverse charge once I have the VAT ID of a B2B customer, how big of a deal is it in your experience to not let B2B customers to enter their VAT ID at all?

If you still want to dig further of why I’m asking this:
I want to offer VAT inclusive pricing for my SaaS subscription using Stripe. Currently, there is no way in Stripe to deduct the VAT % from the final price, if the customer enters a valid VAT ID number; so to apply reverse charge. Thus I’m thinking to circumvent the issue by treating it as a B2C sale, adding the VAT ID number of the customer only as a “note” and not actually use it to deduct the VAT on the final price.
The question is therefore if that is legally possible?
So basically instead of having (e.g. VAT rate = 20%):

• B2C = 20€ VAT inclusive
• B2B (with valid VAT ID) = 16,67€ (VAT exclusive) applying the reverse charge (which Stripe doesn’t allow me to do)
  I would have:
• B2C = 10€ VAT inclusive
• B2B = 10€ VAT inclusive (with somewhere his VAT ID number so he can claim it back)