That is exactly what apple doesn't want you to do. They don't want users making deals with local ISPs for service. They want in on that transaction. Virtual SIMs, controlled by phone manufacturers, will allow them to exercise a degree of control over wandering users. If you are a local ISP, you better be part of the program if you want to sell your services to apple's devices. And most users will be OK with this. They will probably appreciated not having to buy a local SIM cars. They will enjoy how easily their virtual SIM connected to the local ISP and hooked them into a the prearranged roaming deal for apple devices. They won't question the price because they will have no input into a negotiation that happened years before they arrived in the country. All that is left for them is to blindly pay the bills.