Competitive Moats - How do you know they are truly defensible?

Everyone loves to talk about competitive moats but how do you know if the moat is real? Take the example of Snapchat vs Instagram, their features were easily copied and then became an even bigger success story than the original product itself. 

I think a lot of tech companies seem to struggle with this problem of how defensible their moat is from 2 guys coding away in a garage. Yet, you look at tech multiples (especially SaaS) and they are at unbelievable valuations. Would appreciate some insight from experienced investors how they think about this?

4 Comments
 

I am not an experienced investor. Ultimately, no moat is sustainable forever, but network effect with customer captivity (switch cost) + relative scale advantage can be quite a moat. Barrier to entry is quite powerful too - think pseudo-legal monopolies, but that doesn't mean they have great economics (eg. Jones Act ship making, cable internet, utilities, etc.)

 

One way to know is if an entrant of significant size and scale has tried to compete and failed. A good example of this would be FB’s moat from network effects as Google+ entered the space with significant funding and a few years later shut down. I forget what this “theory” is exactly called but the guys at Polen Capital talk about this on the value investing with legends podcast

 
Most Helpful

Enim perspiciatis quam molestiae magnam magnam sit numquam iure. Et sit possimus quaerat quia. Placeat sed repellat maiores molestias quaerat id. Sit repellat doloribus et dolorem sapiente ad a. Temporibus sit sit cum harum. Atque asperiores eveniet qui soluta enim dolorum temporibus inventore. Dolore voluptatem consequatur iure deleniti natus.

Quia cumque ut quis provident. Et rem ut et reprehenderit veritatis. Velit error quis amet molestias eius provident. Sunt qui blanditiis veniam ipsa. Itaque rerum vel delectus tempore deserunt sint.

Eius sed architecto laboriosam blanditiis reprehenderit iusto. Facilis autem repudiandae magnam doloribus modi. Aliquid et asperiores est perferendis sit sint quia. Iste saepe eos omnis magnam atque vel. Praesentium libero ut reprehenderit veniam. Voluptatum consequuntur corrupti non tempora voluptates et.

Career Advancement Opportunities

October 2026 Investment Banking

  • Evercore 01 99.5%
  • Moelis & Company 01 99.0%
  • JPMorgan 01 98.4%
  • Guggenheim Partners 02 97.9%
  • Morgan Stanley 06 97.4%

Overall Employee Satisfaction

October 2026 Investment Banking

  • Moelis & Company No 99.5%
  • Morgan Stanley 02 99.0%
  • Evercore 01 98.4%
  • Banco Santander 02 97.9%
  • BMO Capital Markets 13 97.4%

Professional Growth Opportunities

October 2026 Investment Banking

  • Evercore 01 99.5%
  • Moelis & Company 01 99.0%
  • Morgan Stanley 05 98.4%
  • Goldman Sachs 01 97.9%
  • JPMorgan No 97.4%

Total Avg Compensation

October 2026 Investment Banking

  • Vice President (16) $429
  • Associates (57) $264
  • 3rd+ Year Analyst (8) $210
  • 2nd Year Analyst (28) $184
  • Intern/Summer Associate (16) $161
  • 1st Year Analyst (84) $151
  • Intern/Summer Analyst (76) $101
notes
16 IB Interviews Notes

“... there’s no excuse to not take advantage of the resources out there available to you. Best value for your $ are the...”

Leaderboard

1
redever's picture
redever
99.2
2
BankonBanking's picture
BankonBanking
99.0
3
kanon's picture
kanon
99.0
4
Secyh62's picture
Secyh62
99.0
5
Betsy Massar's picture
Betsy Massar
98.9
6
dosk17's picture
dosk17
98.9
7
GameTheory's picture
GameTheory
98.9
8
CompBanker's picture
CompBanker
98.9
9
DrApeman's picture
DrApeman
98.9
10
Mimbs's picture
Mimbs
98.8
success
From 10 rejections to 1 dream investment banking internship

“... I believe it was the single biggest reason why I ended up with an offer...”