We can set a "from $50k/year" as our enterprise price is tailored to the client requirements. Thanks for the feedback, we'll include this in the next update.
With the enterprise package, we're looking at companies with over 250 employees as that's where the biggest penetration of serverless adoption is happening (source: https://www.datadoghq.com/state-of-serverless/). We also estimate that with 90% cloud penetration in this segment of companies, and with over 4M companies with more than 250 employees in the world (asia mainly drives this number), and with 30% of them using serverless services, there are around 1M potential customers, bringing the total TAM to $50bn.