I'm sorry that you feel tricked. I hope that one of the open source options handles your use case if commercial software doesn't work for you.
However, we think that the community will be better off if we can continue to contribute to the open source InfluxDB. We want to invest heavily in open and closed source software. Ultimately the open source community will benefit from an open InfluxDB
A pricing model that scaled with usage and was more inexpensive at the low-end would, in my opinion, better serve your company and customers. That way you pull more people into the product and increase the overall size of the pie.
However, we think that the community will be better off if we can continue to contribute to the open source InfluxDB. We want to invest heavily in open and closed source software. Ultimately the open source community will benefit from an open InfluxDB