"The unit could report compound annual growth of 55% between 2018 and 2022, and reach annual sales of about $38 billion by 2025, the analysts wrote." I'm curio

"The unit could report compound annual growth of 55% between 2018 and 2022, and reach annual sales of about $38 billion by 2025, the analysts wrote." I'm curious how they're making basing these predictions since Google Cloud revenues aren't currently reported.