In theory, that approach sounds great: buy point-solution apps from a variety of cloud-application vendors in the hopes of obtaining attractive pricing along with perhaps some best of breed technologies.
And new software, plus the ability to vary the projected sizes and brightnesses of planets and moons, makes it possible to simulate the sky from anywhere in the solar system: to see earthrise from Mars, for example, or to watch Jupiter's moons rise and set from a vantage point just above the gas giant's cloud-tops.