Salesforce is a SaaS application and hence centrally hosted by Salesforce. In turn to balance the load salesforce would have hosted in multiple servers and locations but centrally hosted in the sense on behalf of all their customers and their version of Salesforce CRM version of the product is hosted (centrally) and managed by Salesforce.

As this is hosted centrally hosted uneven scaling is difficult to support by Salesforce (technically feasible though). Also, Salesforce would provide leverage on the governor limits based on the license if some customer has special needs to bend the common governor limits.

In a way, Governor limits enforce the coding best practices which is good, and in some edge cases need workaround due to the Governor limits.