Yes, I would expect much more from a "Pro" model, at least 8GB, preferably 16-32GB personally.. Running VMs and containers is quite necessary for high security & software development work..
The RK3399 doesn't support more than 8GB RAM CMIIW. Also RK3399 seems very underpowered for software development work, you might want to wait for snapdragon Chromebook or Google's custom Exynos Chromebook.