I am not saying 2000 is too much but I'm 100% sure that your SRE team only does a tiny fraction of what Confluent is doing.
They will have marketing folks, lawyers, they will almost certainly do more testing than you, they are going to have to support many many more configurations than you, they have people all over the world, they have a support staff, they have upstream contributors, they have backoffice people, ...
Nothing against you or your team but what you're doing does in no way compare to building a fully fledget product for on-prem and as a SaaS.
They will have marketing folks, lawyers, they will almost certainly do more testing than you, they are going to have to support many many more configurations than you, they have people all over the world, they have a support staff, they have upstream contributors, they have backoffice people, ...
Nothing against you or your team but what you're doing does in no way compare to building a fully fledget product for on-prem and as a SaaS.