Earlier quoted context omitted.
Is this a common strategy? Are you kidding? The entirety of Silicon Valley is predicated upon and funded by this business model. Almost every service provided by a SV startup is subsidized.
Its subsidized in its R&D cost though. Not in the marginal cost of servers/apis ... I sometimes joke like our first customer cost us $2M but our 2nd was wildly profitable!
Have you ever heard of companies that buy services from other companies under the same VC?