It's not "foreign web services", it's everything. Most of your banking apps also won't work. Anyone dabbled in IT and fintech for a few months knows this. Web is Israeli. Anything you ever bought, shared online in the last 10 years has a crumb of info that travelled through an Israeli owned or maintained server.You don't only access foreign web services through apps everything works with web alone too FYI. I have no such app on my phone and I still use several of them.
If for some reason it becomes necessary to cut entirely off foreign software so be it, I would rather do that.
Turkey doesn't have the power and the market to support such an idea and the government don't have the popular support to enact a great firewall. Regardless this will be done to some degree, but it won't be this government that does it most probably. 10 years later maybe, because the new world order of internet will force us to; globalism is dead.