Magento – Configurable product does not have sub-products magento 2

It's not possible to have customer group prices, special prices or tier prices per associated product with configurable products.

Magento completely ignores prices of associated products in the configurable product type. You can specify a price difference for each associated product within a configurable product, but the base price with its modifications is always taken from the configurable product itself.

Conclusion is: You cannot achieve what you try to do without custom extensions. There are some extensions around that change how pricing for configurable products work, but due to these substantial changes there are always rewrites of important core classes and you should think twice if you really need it.

This extension is a good example: Better Configurable Products

But you should not expect it to work out of the box, at least not if you use a custom theme. This is not a "one click install and forget" extension, it should be installed and configured by a developer.

Looks like Magento\ConfigurableProduct\Helper\Product\Options\Factory available only in 2.1 version.

You can replace code

$configurableOptions = $optionsFactory->create($configurableAttributesData);

with

$configurableOptions = [];
foreach ($configurableAttributesData as $itemData) {
    $configurableOptions[] = $ObjectManager->create('\Magento\ConfigurableProduct\Api\Data\OptionInterface', $itemData);
}