I've seen similar things. At my last company I helped start a team of 5 people to implement an identity solution, We got it done in about 3 months. Due to shitty management they pushed out the competent devs and back filled with cheaper replacements, either fresh from university or contractors. Fast forward a few years and the over team is now a group of teams with about +/- 40 people and it takes 4 months just to get a plan together which is then obsolete when they want to start due to more shitty management.