You have to compare that against what was done instead. Their solution was to employ a few engineers to create a new contract-based test framework, which will a

You have to compare that against what was done instead. Their solution was to employ a few engineers to create a new contract-based test framework, which will also have to be maintained. I believe that counts as "significant" investment too, but the calculus has to be whether that is less costly than improving their E2E tests.